From emily at astro.su.se Fri Jan 24 15:40:11 2020 From: emily at astro.su.se (Emily Freeland) Date: Fri, 24 Jan 2020 15:40:11 +0100 Subject: [Okc-wp4] Your turn to organize the Klein Bottle Message-ID: Hi Extreme Objects Working Group! It is your turn to organize the Klein Bottle. [image: :smile:] I can help with the details of how and what food and drinks you are allowed to order. You should invite a speaker from another OKC working group and organize a game that everyone can play. Thanks! Emily -- *Community Manager* Oskar Klein Centre *Career Development Coach for PhDs* www.linkedin.com/in/emily-freeland/ -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Wed Jan 29 11:36:15 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Wed, 29 Jan 2020 10:36:15 +0000 Subject: [Okc-wp4] EO meeting Thu Jan 30 @ 13:15 at Room A4:1003 (unusual location) Message-ID: <664d321a46094ab3ba46e54b15bb3278@astro.su.se> Dear colleagues, our next EO meeting will take place this Thursday Jan 30 at 13:15. The meeting will take place in Room A4:1003. This is the "Room with a View" in the 4th floor, one floor below the usual meeting location. This week Erin O'Sullivan (Uppsala University) will present Title: What can we do to be ready for the next galactic supernova? Abstract: We are in the process of preparing for the next generation of the SuperNova Early Warning System (SNEWS2.0.). As such, we would like to use this meeting to brainstorm strategies for how we can utilize the early warning we get from a galactic supernova neutrino signal to capitalize on the earliest observations of the EM signal. What parameters can we extract from neutrinos in order to guide observations? What things can we do now to be ready for this event? All are welcome to share their thoughts and opinions! See you there! --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Thu Jan 30 10:13:56 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Thu, 30 Jan 2020 09:13:56 +0000 Subject: [Okc-wp4] EO meeting Thu Jan 30 @ 13:15 at Room A4:1003 (unusual location) In-Reply-To: <664d321a46094ab3ba46e54b15bb3278@astro.su.se> References: <664d321a46094ab3ba46e54b15bb3278@astro.su.se> Message-ID: <9d65973dab324403a90b7b6911660640@astro.su.se> Reminder of the EO meeting this afternoon. --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University ________________________________ From: Okc-wp4-at-fysik.su.se on behalf of Andre Schneider Sent: Wednesday, January 29, 2020 11:36:15 AM To: Okc-wp4 at fysik.su.se; people at nordita.org Subject: [Okc-wp4] EO meeting Thu Jan 30 @ 13:15 at Room A4:1003 (unusual location) Dear colleagues, our next EO meeting will take place this Thursday Jan 30 at 13:15. The meeting will take place in Room A4:1003. This is the "Room with a View" in the 4th floor, one floor below the usual meeting location. This week Erin O'Sullivan (Uppsala University) will present Title: What can we do to be ready for the next galactic supernova? Abstract: We are in the process of preparing for the next generation of the SuperNova Early Warning System (SNEWS2.0.). As such, we would like to use this meeting to brainstorm strategies for how we can utilize the early warning we get from a galactic supernova neutrino signal to capitalize on the earliest observations of the EM signal. What parameters can we extract from neutrinos in order to guide observations? What things can we do now to be ready for this event? All are welcome to share their thoughts and opinions! See you there! --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Tue Feb 25 12:07:39 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Tue, 25 Feb 2020 11:07:39 +0000 Subject: [Okc-wp4] EO meeting Thu Feb 27 @ 13:15 at Room A5:1003 Message-ID: Dear colleagues, our next EO meeting will take place this Thursday Feb 27 at 13:15. The meeting will take place in Room A5:1003. This is the "Room with a View" in the 5th floor. This week Shuai Zha (Stockholm University) will present Title: Evolution of ONeMg Core in Super-AGB Stars toward Electron-capture Supernovae Abstract: Stars with ~8�C10 M �� evolve to form a strongly degenerate ONeMg core. When the core mass becomes close to the Chandrasekhar mass, the core undergoes electron captures on 24Mg and 20Ne that induce an electron-capture supernova (ECSN). Previous results suggested that the ONeMg core in ECSN will collapse into a neutron star (NS). However, this scenario is not unambiguously justified. Alternatively, the oxygen deflagration initialized by the heating due to electron capture on 20Ne may lead to a partial thermonuclear explosion. In this talk, I will present our new results of ECSN progenitor evolution based on MESA and 2D flame-capturing hydrodynamics simulations. I will discuss the uncertainties that hinder a conclusive answer on whether NS formation is the outcome of ECSN. At last, I will briefly introduce some recent works on the observational features of ECSN. See you there! --------------------------------- Andr�� da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Thu Feb 27 11:00:40 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Thu, 27 Feb 2020 10:00:40 +0000 Subject: [Okc-wp4] EO meeting Thu Feb 27 @ 13:15 at Room A5:1003 In-Reply-To: References: Message-ID: <5055657497734a6f92377f1b30c19615@astro.su.se> Reminder of the EO meeting this afternoon! --------------------------------- Andr�� da Silva Schneider Department of Astronomy Stockholm University ________________________________ From: Okc-wp4-at-fysik.su.se on behalf of Andre Schneider Sent: Tuesday, February 25, 2020 12:07:39 PM To: Okc-wp4 at fysik.su.se; people at nordita.org Subject: [Okc-wp4] EO meeting Thu Feb 27 @ 13:15 at Room A5:1003 Dear colleagues, our next EO meeting will take place this Thursday Feb 27 at 13:15. The meeting will take place in Room A5:1003. This is the "Room with a View" in the 5th floor. This week Shuai Zha (Stockholm University) will present Title: Evolution of ONeMg Core in Super-AGB Stars toward Electron-capture Supernovae Abstract: Stars with ~8�C10 M �� evolve to form a strongly degenerate ONeMg core. When the core mass becomes close to the Chandrasekhar mass, the core undergoes electron captures on 24Mg and 20Ne that induce an electron-capture supernova (ECSN). Previous results suggested that the ONeMg core in ECSN will collapse into a neutron star (NS). However, this scenario is not unambiguously justified. Alternatively, the oxygen deflagration initialized by the heating due to electron capture on 20Ne may lead to a partial thermonuclear explosion. In this talk, I will present our new results of ECSN progenitor evolution based on MESA and 2D flame-capturing hydrodynamics simulations. I will discuss the uncertainties that hinder a conclusive answer on whether NS formation is the outcome of ECSN. At last, I will briefly introduce some recent works on the observational features of ECSN. See you there! --------------------------------- Andr�� da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Tue Mar 10 20:40:01 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Tue, 10 Mar 2020 19:40:01 +0000 Subject: [Okc-wp4] EO meeting Thu Mar 12 @ 13:15 at Room A5:1003 Message-ID: <3466f026747b4924ba78c531345d2e60@astro.su.se> Dear colleagues, our next EO meeting will take place this Thursday Mar 12 at 13:15. The meeting will take place in Room A5:1003. This is the "Room with a View" in the 5th floor. This week Quentin Pognan (Stockholm University) will present Title: Searching for Super-Eddington AGN Abstract: Accretion onto black holes at rates above the Eddington limit has long been discussed in the context of supermassive black hole (SMBH) formation and evolution, providing a possible explanation for the presence of massive quasars at high redshifts (z >~ 7), as well as having implications for SMBH growth at later epochs. However, it is currently unclear whether such 'super-Eddington' accretion occurs in SMBHs at all, how common it is, or whether every SMBH may experience it. In this talk, I will present the work done to investigate the observational consequences of a simplistic model for super-Eddington accretion flows -- an optically thick, geometrically thin accretion disc (AD) where the inner-most parts experience severe photon-trapping, which is enhanced with increased accretion rate. See you there! --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Wed Mar 11 21:10:43 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Wed, 11 Mar 2020 20:10:43 +0000 Subject: [Okc-wp4] EO meeting announcement in light of Covid-19 Message-ID: <513858a332b244ab8f42db1c4f4f3f7b@astro.su.se> Dear colleagues, due to the current situation concerning the Covid-19 virus, we strongly encourage everybody to join the meeting remotely via zoom. An invitation will be sent around 13:00. It should only be necessary to click on the provided link. Note that this week's meeting will still take place this Thu March 12 at AlbaNova Room A5:1003 starting at 13:15, for those that prefer to attend the meeting in person. Future meetings may either follow recommendations put in place by Stockholm University or more strict ones, such only hosting meetings remotely. We will reevaluate the situation by the Mar 26 meeting and send out another announcement. Thank you for your comprehension, --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Thu Mar 12 11:22:41 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Thu, 12 Mar 2020 10:22:41 +0000 Subject: [Okc-wp4] EO meeting Thu Mar 12 @ 13:15 Room A5:1003 or via Zoom Message-ID: Reminder of the EO meeting in less than 2 hours and Zoom link. Dear colleagues, our next EO meeting will take place this Thursday Mar 12 at 13:15. The meeting will take place in Room A5:1003. This is the "Room with a View" in the 5th floor. Bar any technical issues as this is the first time we are doing this: Due to covid-19 concerns you may chose to attend the meeting via Zoom. Details to join the meeting remotely are the bottom of this message. This week Quentin Pognan (Stockholm University) will present Title: Searching for Super-Eddington AGN Abstract: Accretion onto black holes at rates above the Eddington limit has long been discussed in the context of supermassive black hole (SMBH) formation and evolution, providing a possible explanation for the presence of massive quasars at high redshifts (z >~ 7), as well as having implications for SMBH growth at later epochs. However, it is currently unclear whether such 'super-Eddington' accretion occurs in SMBHs at all, how common it is, or whether every SMBH may experience it. In this talk, I will present the work done to investigate the observational consequences of a simplistic model for super-Eddington accretion flows -- an optically thick, geometrically thin accretion disc (AD) where the inner-most parts experience severe photon-trapping, which is enhanced with increased accretion rate. -------------------------------------------------------------------------------------------------------------- Andre Schneider is inviting you to a scheduled Zoom meeting. Topic: EO Meeting Time: Mar 12, 2020 01:05 PM Stockholm Join Zoom Meeting https://stockholmuniversity.zoom.us/j/712297783 Meeting ID: 712 297 783 One tap mobile +46850539728,,712297783# Sweden +46844682488,,712297783# Sweden Dial by your location +46 850 539 728 Sweden +46 8 4468 2488 Sweden +46 8 5052 0017 Sweden +45 89 88 37 88 Denmark +45 32 70 12 06 Denmark +45 32 71 31 57 Denmark +47 7349 4877 Norway +47 2396 0588 Norway +358 9 4245 1488 Finland +358 3 4109 2129 Finland +1 408 652 8184 US (San Jose) +1 646 876 9923 US (New York) +1 669 900 6833 US (San Jose) +1 408 638 0968 US (San Jose) Meeting ID: 712 297 783 Find your local number: https://stockholmuniversity.zoom.us/u/cdXuDi7lUX Join by SIP 712297783 at 109.105.112.236 712297783 at 109.105.112.235 Join by H.323 109.105.112.236 109.105.112.235 Meeting ID: 712 297 783 Join by Skype for Business https://stockholmuniversity.zoom.us/skype/712297783 --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Mon Apr 6 21:35:36 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Mon, 6 Apr 2020 19:35:36 +0000 Subject: [Okc-wp4] EO meeting Thu Arp 6 @ 13:15 via zoom Message-ID: Dear colleagues, our next EO meeting will take place this Thursday Apr 6 at 13:15. The meeting will take place via zoom https://stockholmuniversity.zoom.us/j/446165416 You'll be able to join the meeting after 1:00PM. Meeting will start at 1:15PM. More details below. This week Vivek Chaurasia (Stockholm University) will present Title: BNS Mergers: Effect of Spin Orientation Abstract: In this talk I will review the results of arXiv: 2003.11901 which is a continuation of our study of the binary neutron star parameter space by investigating the effect of the spin orientation on the dynamics, gravitational wave emission, and mass ejection during the binary neutron star coalescence. For this we perform fully consistent (3+1) D numerical relativity simulations for various precessing systems. Although pulsar observations of BNS systems suggest that most NSs have small spins this conclusion is based on a small selected set of observed binaries. Similar to the uncertainty in the spin magnitude, the orientation of spins in BNS systems is also highly uncertain and unknown. Misaligned spins can be caused by the supernova explosions of the progenitor stars. A possible realignment of the spin with the orbital angular momentum due to accretion is only possible for the more massive NS, but not for the secondary star. In addition, for BNS systems formed due to dynamical capture, there is no reason to have aligned spins at all. We find that due to the particular choice of the setups, five configurations show precession effects, from which two show a precession (‘wobbling’) of the orbital plane, while three show a ‘bobbing’ motion, i.e., the orbital angular momentum does not precess, while the orbital plane moves along the orbital angular momentum axis. Considering the ejection of mass, we find that precessing systems can have an anisotropic mass ejection, which could lead to a final remnant kick of about ∼40km/s for the studied systems. Furthermore, for the chosen configurations, anti-aligned spins lead to larger mass ejecta than aligned spins, so that brighter electromagnetic counterparts could be expected for these configurations. Finally, we compare our simulations with the precessing, tidal waveform approximant and find good agreement between the approximant and our numerical relativity simulations. See you then! Topic: EO Meeting Time: Apr 9, 2020 01:00 PM Stockholm Join Zoom Meeting https://stockholmuniversity.zoom.us/j/446165416 Meeting ID: 446 165 416 One tap mobile +46850539728,,446165416# Sweden +46844682488,,446165416# Sweden Dial by your location +46 850 539 728 Sweden +46 8 4468 2488 Sweden +46 8 5050 0828 Sweden +46 8 5050 0829 Sweden +46 8 5052 0017 Sweden +45 89 88 37 88 Denmark +45 32 70 12 06 Denmark +45 32 71 31 57 Denmark +45 32 72 80 10 Denmark +45 32 72 80 11 Denmark +47 2396 0588 Norway +47 7349 4877 Norway +358 3 4109 2129 Finland +358 9 4245 1488 Finland +1 253 215 8782 US +1 301 715 8592 US +1 312 626 6799 US (Chicago) +1 346 248 7799 US (Houston) +1 408 638 0968 US (San Jose) +1 408 652 8184 US (San Jose) +1 646 876 9923 US (New York) +1 669 900 6833 US (San Jose) Meeting ID: 446 165 416 Find your local number: https://stockholmuniversity.zoom.us/u/cdXuDi7lUX Join by SIP 446165416 at 109.105.112.236 446165416 at 109.105.112.235 Join by H.323 109.105.112.236 109.105.112.235 Meeting ID: 446 165 416 Join by Skype for Business https://stockholmuniversity.zoom.us/skype/446165416 --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Mon Apr 6 21:44:27 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Mon, 6 Apr 2020 19:44:27 +0000 Subject: [Okc-wp4] EO meeting Thu April 9 @ 13:15 via zoom (FIXED DATE) Message-ID: <36605d93a84c44e2afd056ddcd1c0c78@astro.su.se> Dear colleagues, I apologized that I messed up the date in the previous announcement! Our next EO meeting will take place this Thursday Apr 9 at 13:15. The meeting will take place via zoom https://stockholmuniversity.zoom.us/j/446165416 You'll be able to join the meeting after 1:00PM. Meeting will start at 1:15PM. More details below. This week Vivek Chaurasia (Stockholm University) will present Title: BNS Mergers: Effect of Spin Orientation Abstract: In this talk I will review the results of arXiv: 2003.11901 which is a continuation of our study of the binary neutron star parameter space by investigating the effect of the spin orientation on the dynamics, gravitational wave emission, and mass ejection during the binary neutron star coalescence. For this we perform fully consistent (3+1) D numerical relativity simulations for various precessing systems. Although pulsar observations of BNS systems suggest that most NSs have small spins this conclusion is based on a small selected set of observed binaries. Similar to the uncertainty in the spin magnitude, the orientation of spins in BNS systems is also highly uncertain and unknown. Misaligned spins can be caused by the supernova explosions of the progenitor stars. A possible realignment of the spin with the orbital angular momentum due to accretion is only possible for the more massive NS, but not for the secondary star. In addition, for BNS systems formed due to dynamical capture, there is no reason to have aligned spins at all. We find that due to the particular choice of the setups, five configurations show precession effects, from which two show a precession (‘wobbling’) of the orbital plane, while three show a ‘bobbing’ motion, i.e., the orbital angular momentum does not precess, while the orbital plane moves along the orbital angular momentum axis. Considering the ejection of mass, we find that precessing systems can have an anisotropic mass ejection, which could lead to a final remnant kick of about ∼40km/s for the studied systems. Furthermore, for the chosen configurations, anti-aligned spins lead to larger mass ejecta than aligned spins, so that brighter electromagnetic counterparts could be expected for these configurations. Finally, we compare our simulations with the precessing, tidal waveform approximant and find good agreement between the approximant and our numerical relativity simulations. See you then! Topic: EO Meeting Time: Apr 9, 2020 01:00 PM Stockholm Join Zoom Meeting https://stockholmuniversity.zoom.us/j/446165416 Meeting ID: 446 165 416 One tap mobile +46850539728,,446165416# Sweden +46844682488,,446165416# Sweden Dial by your location +46 850 539 728 Sweden +46 8 4468 2488 Sweden +46 8 5050 0828 Sweden +46 8 5050 0829 Sweden +46 8 5052 0017 Sweden +45 89 88 37 88 Denmark +45 32 70 12 06 Denmark +45 32 71 31 57 Denmark +45 32 72 80 10 Denmark +45 32 72 80 11 Denmark +47 2396 0588 Norway +47 7349 4877 Norway +358 3 4109 2129 Finland +358 9 4245 1488 Finland +1 253 215 8782 US +1 301 715 8592 US +1 312 626 6799 US (Chicago) +1 346 248 7799 US (Houston) +1 408 638 0968 US (San Jose) +1 408 652 8184 US (San Jose) +1 646 876 9923 US (New York) +1 669 900 6833 US (San Jose) Meeting ID: 446 165 416 Find your local number: https://stockholmuniversity.zoom.us/u/cdXuDi7lUX Join by SIP 446165416 at 109.105.112.236 446165416 at 109.105.112.235 Join by H.323 109.105.112.236 109.105.112.235 Meeting ID: 446 165 416 Join by Skype for Business https://stockholmuniversity.zoom.us/skype/446165416 --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Thu Apr 9 10:12:42 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Thu, 9 Apr 2020 08:12:42 +0000 Subject: [Okc-wp4] EO meeting Thu April 9 @ 13:15 via zoom (FIXED DATE) In-Reply-To: <36605d93a84c44e2afd056ddcd1c0c78@astro.su.se> References: <36605d93a84c44e2afd056ddcd1c0c78@astro.su.se> Message-ID: <95cba8112261431a9c4081d4c642f301@astro.su.se> EO meeting reminder this afternoon at 13:15 https://stockholmuniversity.zoom.us/j/446165416 --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University ________________________________ From: Okc-wp4-at-fysik.su.se on behalf of Andre Schneider Sent: Monday, April 6, 2020 9:44:27 PM To: Okc-wp4 at fysik.su.se; people at nordita.org Subject: [Okc-wp4] EO meeting Thu April 9 @ 13:15 via zoom (FIXED DATE) Dear colleagues, I apologized that I messed up the date in the previous announcement! Our next EO meeting will take place this Thursday Apr 9 at 13:15. The meeting will take place via zoom https://stockholmuniversity.zoom.us/j/446165416 You'll be able to join the meeting after 1:00PM. Meeting will start at 1:15PM. More details below. This week Vivek Chaurasia (Stockholm University) will present Title: BNS Mergers: Effect of Spin Orientation Abstract: In this talk I will review the results of arXiv: 2003.11901 which is a continuation of our study of the binary neutron star parameter space by investigating the effect of the spin orientation on the dynamics, gravitational wave emission, and mass ejection during the binary neutron star coalescence. For this we perform fully consistent (3+1) D numerical relativity simulations for various precessing systems. Although pulsar observations of BNS systems suggest that most NSs have small spins this conclusion is based on a small selected set of observed binaries. Similar to the uncertainty in the spin magnitude, the orientation of spins in BNS systems is also highly uncertain and unknown. Misaligned spins can be caused by the supernova explosions of the progenitor stars. A possible realignment of the spin with the orbital angular momentum due to accretion is only possible for the more massive NS, but not for the secondary star. In addition, for BNS systems formed due to dynamical capture, there is no reason to have aligned spins at all. We find that due to the particular choice of the setups, five configurations show precession effects, from which two show a precession (‘wobbling’) of the orbital plane, while three show a ‘bobbing’ motion, i.e., the orbital angular momentum does not precess, while the orbital plane moves along the orbital angular momentum axis. Considering the ejection of mass, we find that precessing systems can have an anisotropic mass ejection, which could lead to a final remnant kick of about ∼40km/s for the studied systems. Furthermore, for the chosen configurations, anti-aligned spins lead to larger mass ejecta than aligned spins, so that brighter electromagnetic counterparts could be expected for these configurations. Finally, we compare our simulations with the precessing, tidal waveform approximant and find good agreement between the approximant and our numerical relativity simulations. See you then! Topic: EO Meeting Time: Apr 9, 2020 01:00 PM Stockholm Join Zoom Meeting https://stockholmuniversity.zoom.us/j/446165416 Meeting ID: 446 165 416 One tap mobile +46850539728,,446165416# Sweden +46844682488,,446165416# Sweden Dial by your location +46 850 539 728 Sweden +46 8 4468 2488 Sweden +46 8 5050 0828 Sweden +46 8 5050 0829 Sweden +46 8 5052 0017 Sweden +45 89 88 37 88 Denmark +45 32 70 12 06 Denmark +45 32 71 31 57 Denmark +45 32 72 80 10 Denmark +45 32 72 80 11 Denmark +47 2396 0588 Norway +47 7349 4877 Norway +358 3 4109 2129 Finland +358 9 4245 1488 Finland +1 253 215 8782 US +1 301 715 8592 US +1 312 626 6799 US (Chicago) +1 346 248 7799 US (Houston) +1 408 638 0968 US (San Jose) +1 408 652 8184 US (San Jose) +1 646 876 9923 US (New York) +1 669 900 6833 US (San Jose) Meeting ID: 446 165 416 Find your local number: https://stockholmuniversity.zoom.us/u/cdXuDi7lUX Join by SIP 446165416 at 109.105.112.236 446165416 at 109.105.112.235 Join by H.323 109.105.112.236 109.105.112.235 Meeting ID: 446 165 416 Join by Skype for Business https://stockholmuniversity.zoom.us/skype/446165416 --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From stephan.rosswog at astro.su.se Thu May 28 11:18:36 2020 From: stephan.rosswog at astro.su.se (Stephan Rosswog) Date: Thu, 28 May 2020 09:18:36 +0000 Subject: [Okc-wp4] Fwd: [Int_subscribers] REMINDER: INT S@INT seminar tomorrow 5/28 References: Message-ID: Dear all that could be interesting… Best Stephan Begin forwarded message: From: INT news list > Subject: [Int_subscribers] REMINDER: INT S at INT seminar tomorrow 5/28 Date: 27 May 2020 at 19:13:35 CEST To: > Reply-To: > Dear Colleagues, Please join us for the next online INT Seminar (o-S at INT) on Thursday, May 28 at 10:30 am Pacific Time, presented by Christian Drischler, University of California, Berkeley, and Lawrence Berkeley National Laboratory. The meeting will be held over Zoom at the following link: https://washington.zoom.us/j/503329151. Title "Quantifying uncertainties in the nuclear-matter equation of state" Abstract How well do we know the neutron-matter equation of state (EOS) at the densities inside neutron stars? And the nuclear saturation properties of symmetric matter? Chiral effective field theory (EFT) is widely used to predict the nuclear-matter EOS. What is needed now are statistically meaningful comparisons between nuclear theory and recent observational constraints, e.g., from NICER and direct detection of gravitational waves. In this talk I report on the BUQEYE collaboration's [1] recent statistical analysis of EFT truncation errors in the infinite-matter EOS derived from chiral EFT [2,3]. Bayesian machine learning, via Gaussian Processes with physics-based hyperparameters, allows us to efficiently quantify and propagate theoretical uncertainties of the EOS (such as correlated EFT truncation errors) to derived quantities. In particular, I will explain why an understanding of truncation-error correlations between different densities and observables is crucial for reliable EOS uncertainty quantification. [1] https://buqeye.github.io/ [2] Drischler, Furnstahl, Melendez, and Phillips, arXiv:2004.07232 [3] Drischler, Melendez, Furnstahl, and Phillips, arXiv:2004.07805 We look forward to seeing you there! dy>_______________________________________________ Int_subscribers mailing list Int_subscribers at u.washington.edu http://mailman13.u.washington.edu/mailman/listinfo/int_subscribers ---------------------------------------------- Prof. Dr. Stephan Rosswog Computational High-Energy Astrophysics The Oskar Klein Centre for Cosmoparticle Physics Department of Astronomy, Stockholm University AlbaNova, Roslagstullbacken 21 SE-10691 Stockholm, Sweden Email: stephan.rosswog at astro.su.se Tel.: +46 (0)8 5537 8529 URL: http://compact-merger.astro.su.se/ -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Mon Jun 1 10:16:13 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Mon, 1 Jun 2020 08:16:13 +0000 Subject: [Okc-wp4] EO meeting Thu June 4 @ 13:15 via Zoom Message-ID: Dear colleagues, the next Extreme Objects meeting will take place this Thursday June 4th at 13:15. The meeting will take place via zoom https://stockholmuniversity.zoom.us/j/64691580003 You'll be able to join the meeting after 13:00. Meeting will start at 13:15. More details below. This week Greg Ashton (Monash University) will present Title: Maximising the science of gravitational-wave observatories Abstract: The era of gravitation-wave astronomy is well underway. The third LIGO-Virgo observing run recently concluded bringing the total of detections and candidates to 67 and future observing runs with improved detectors will continue to advance the number and variety of signals we observe. These signals and their multi-messenger counterparts encode information which can answer some of the big questions facing science today. In this talk, I will describe how a Bayesian inference framework ensures we maximise the science of gravitational-wave observatories. From gold-plating marginal candidates to quantifying the astrophysical probability of a signal and inferring the source properties using the most sophisticated waveform models. I'll describe many of the challenges and limiting factors we currently face such the handling of systematic uncertainty in our physical signal models and our models of the noise. I'll then conclude by discussing how this framework can enable multi-messenger inference and the impacts it is already having across astrophysics. See you then! Topic: EO Meeting Time: Jun 4, 2020 01:00 PM Stockholm Join Zoom Meeting https://stockholmuniversity.zoom.us/j/64691580003 Meeting ID: 646 9158 0003 One tap mobile +46850500829,,64691580003# Sweden +46850520017,,64691580003# Sweden Dial by your location +46 8 5050 0829 Sweden +46 8 5052 0017 Sweden +46 850 539 728 Sweden +46 8 4468 2488 Sweden +46 8 5050 0828 Sweden +45 32 72 80 10 Denmark +45 32 72 80 11 Denmark +45 89 88 37 88 Denmark +45 32 70 12 06 Denmark +45 32 71 31 57 Denmark +47 7349 4877 Norway +47 2396 0588 Norway +358 9 4245 1488 Finland +358 3 4109 2129 Finland +1 408 652 8184 US (San Jose) +1 646 876 9923 US (New York) +1 669 900 6833 US (San Jose) +1 253 215 8782 US (Tacoma) +1 301 715 8592 US (Germantown) +1 312 626 6799 US (Chicago) +1 346 248 7799 US (Houston) +1 408 638 0968 US (San Jose) Meeting ID: 646 9158 0003 Find your local number: https://stockholmuniversity.zoom.us/u/cbFqtCrPH8 Join by SIP 64691580003 at 109.105.112.236 64691580003 at 109.105.112.235 Join by H.323 109.105.112.236 109.105.112.235 Meeting ID: 646 9158 0003 Join by Skype for Business https://stockholmuniversity.zoom.us/skype/64691580003 --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Thu Jun 4 10:50:08 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Thu, 4 Jun 2020 08:50:08 +0000 Subject: [Okc-wp4] EO meeting Thu June 4 @ 13:15 via Zoom In-Reply-To: References: Message-ID: Reminder of the EO meeting this afternoon. --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University ________________________________ From: Okc-wp4-at-fysik.su.se on behalf of Andre Schneider Sent: Monday, June 1, 2020 10:16:13 AM To: Okc-wp4 at fysik.su.se; people at nordita.org Subject: [Okc-wp4] EO meeting Thu June 4 @ 13:15 via Zoom Dear colleagues, the next Extreme Objects meeting will take place this Thursday June 4th at 13:15. The meeting will take place via zoom https://stockholmuniversity.zoom.us/j/64691580003 You'll be able to join the meeting after 13:00. Meeting will start at 13:15. More details below. This week Greg Ashton (Monash University) will present Title: Maximising the science of gravitational-wave observatories Abstract: The era of gravitation-wave astronomy is well underway. The third LIGO-Virgo observing run recently concluded bringing the total of detections and candidates to 67 and future observing runs with improved detectors will continue to advance the number and variety of signals we observe. These signals and their multi-messenger counterparts encode information which can answer some of the big questions facing science today. In this talk, I will describe how a Bayesian inference framework ensures we maximise the science of gravitational-wave observatories. From gold-plating marginal candidates to quantifying the astrophysical probability of a signal and inferring the source properties using the most sophisticated waveform models. I'll describe many of the challenges and limiting factors we currently face such the handling of systematic uncertainty in our physical signal models and our models of the noise. I'll then conclude by discussing how this framework can enable multi-messenger inference and the impacts it is already having across astrophysics. See you then! Topic: EO Meeting Time: Jun 4, 2020 01:00 PM Stockholm Join Zoom Meeting https://stockholmuniversity.zoom.us/j/64691580003 Meeting ID: 646 9158 0003 One tap mobile +46850500829,,64691580003# Sweden +46850520017,,64691580003# Sweden Dial by your location +46 8 5050 0829 Sweden +46 8 5052 0017 Sweden +46 850 539 728 Sweden +46 8 4468 2488 Sweden +46 8 5050 0828 Sweden +45 32 72 80 10 Denmark +45 32 72 80 11 Denmark +45 89 88 37 88 Denmark +45 32 70 12 06 Denmark +45 32 71 31 57 Denmark +47 7349 4877 Norway +47 2396 0588 Norway +358 9 4245 1488 Finland +358 3 4109 2129 Finland +1 408 652 8184 US (San Jose) +1 646 876 9923 US (New York) +1 669 900 6833 US (San Jose) +1 253 215 8782 US (Tacoma) +1 301 715 8592 US (Germantown) +1 312 626 6799 US (Chicago) +1 346 248 7799 US (Houston) +1 408 638 0968 US (San Jose) Meeting ID: 646 9158 0003 Find your local number: https://stockholmuniversity.zoom.us/u/cbFqtCrPH8 Join by SIP 64691580003 at 109.105.112.236 64691580003 at 109.105.112.235 Join by H.323 109.105.112.236 109.105.112.235 Meeting ID: 646 9158 0003 Join by Skype for Business https://stockholmuniversity.zoom.us/skype/64691580003 --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Sun Jun 7 20:14:51 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Sun, 7 Jun 2020 18:14:51 +0000 Subject: [Okc-wp4] EO meeting Thu June 11 @ 13:15 via Zoom and Informal get-together Message-ID: <745cb790c28b45ddabd2fd18755e0513@astro.su.se> Dear colleagues, our next EO meeting will take place this Thursday Jun 11 at 13:15 via Zoom. https://stockholmuniversity.zoom.us/j/64051046387 and more details below. This week Nihil Sarin from Monash University will present us Title: Observational consequences of binary neutron star merger remnants. Abstract: The first neutron star merger observed with gravitational waves and in electromagnetic radiation confirmed that binary neutron star mergers are the progenitors of at least some short gamma-ray bursts. The multi-messenger observations have been used to a probe a lot of fundamental physics, however, despite the wealth of observations the fate of the remnant of GW170817 is still uncertain. I will give an overview of binary neutron star mergers focussing on the nature of the remnant from observations of short gamma-ray bursts and theoretical considerations. I will discuss the implications of these observations on the nuclear equation of state, neutron star dynamics and gamma-ray bursts. After Nihil's talk we will have an informal get-together: - brief summary of the VR-funded research environment "Gravitational Radiation and Electromagnetic Astrophysical Transients (GREAT)" by Ariel Goobar (PI) - short, 2-slide introductions where researchers (especially new ones) can say a few words about themselves and their research interests If you plan to present two such slides, please send Stephan Rosswog a short note so he can try to accommodate everyone's presentations. Thank you! Andre da Silva Schneider is inviting you to a scheduled Zoom meeting. Topic: EO Meeting Time: Jun 11, 2020 01:00 PM Stockholm Join Zoom Meeting https://stockholmuniversity.zoom.us/j/64051046387 Meeting ID: 640 5104 6387 One tap mobile +46850520017,,64051046387# Sweden +46850539728,,64051046387# Sweden Dial by your location +46 8 5052 0017 Sweden +46 850 539 728 Sweden +46 8 4468 2488 Sweden +46 8 5050 0828 Sweden +46 8 5050 0829 Sweden +45 32 72 80 11 Denmark +45 89 88 37 88 Denmark +45 32 70 12 06 Denmark +45 32 71 31 57 Denmark +45 32 72 80 10 Denmark +47 7349 4877 Norway +47 2396 0588 Norway +358 9 4245 1488 Finland +358 3 4109 2129 Finland +1 408 652 8184 US (San Jose) +1 646 876 9923 US (New York) +1 669 900 6833 US (San Jose) +1 253 215 8782 US (Tacoma) +1 301 715 8592 US (Germantown) +1 312 626 6799 US (Chicago) +1 346 248 7799 US (Houston) +1 408 638 0968 US (San Jose) Meeting ID: 640 5104 6387 Find your local number: https://stockholmuniversity.zoom.us/u/cbvqMZxtBW Join by SIP 64051046387 at 109.105.112.236 64051046387 at 109.105.112.235 Join by H.323 109.105.112.236 109.105.112.235 Meeting ID: 640 5104 6387 Join by Skype for Business https://stockholmuniversity.zoom.us/skype/64051046387 --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From stephan.rosswog at astro.su.se Wed Jun 10 21:28:49 2020 From: stephan.rosswog at astro.su.se (Stephan Rosswog) Date: Wed, 10 Jun 2020 19:28:49 +0000 Subject: [Okc-wp4] kind reminder: EO-talk plus get-together Message-ID: <196F2974-570F-4347-BD02-73E179D01CE5@astro.su.se> Dear all this is just a friendly reminder about tomorrow’s EO talk (via zoom at 13:15), "Observational consequences of binary neutron star merger remnants" by Nikhil Sarin from Monash University. After that we will have an informal get-together: - Ariel Goobar will give a brief summary of the VR-funded research environment "Gravitational Radiation and Electromagnetic Astrophysical Transients (GREAT)" - Then you can give a brief introduction about your research interests (2 slides). So far I have heard from - Mattia Bulla - Janet Chen - Tom Edwards - Sheng Jang - Francesco Torsello The easiest approach is just to share the screen in zoom. If you would like to present something (whether you are new to OKC or not), please drop me a note and have your two slides ready by tomorrow. All the best, stay healthy and see you tomorrow! Stephan ---------------------------------------------- Prof. Dr. Stephan Rosswog Computational High-Energy Astrophysics The Oskar Klein Centre for Cosmoparticle Physics Department of Astronomy, Stockholm University AlbaNova, Roslagstullbacken 21 SE-10691 Stockholm, Sweden Email: stephan.rosswog at astro.su.se Tel.: +46 (0)8 5537 8529 URL: http://compact-merger.astro.su.se/ -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Thu Jun 11 07:41:58 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Thu, 11 Jun 2020 05:41:58 +0000 Subject: [Okc-wp4] EO meeting Thu June 11 @ 13:15 via Zoom and Informal get-together In-Reply-To: <745cb790c28b45ddabd2fd18755e0513@astro.su.se> References: <745cb790c28b45ddabd2fd18755e0513@astro.su.se> Message-ID: Reminder of the EO meting this afternoon. --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University ________________________________ From: Okc-wp4-at-fysik.su.se on behalf of Andre Schneider Sent: Sunday, June 7, 2020 8:14:51 PM To: people at nordita.org; Okc-wp4 at fysik.su.se Subject: [Okc-wp4] EO meeting Thu June 11 @ 13:15 via Zoom and Informal get-together Dear colleagues, our next EO meeting will take place this Thursday Jun 11 at 13:15 via Zoom. https://stockholmuniversity.zoom.us/j/64051046387 and more details below. This week Nihil Sarin from Monash University will present us Title: Observational consequences of binary neutron star merger remnants. Abstract: The first neutron star merger observed with gravitational waves and in electromagnetic radiation confirmed that binary neutron star mergers are the progenitors of at least some short gamma-ray bursts. The multi-messenger observations have been used to a probe a lot of fundamental physics, however, despite the wealth of observations the fate of the remnant of GW170817 is still uncertain. I will give an overview of binary neutron star mergers focussing on the nature of the remnant from observations of short gamma-ray bursts and theoretical considerations. I will discuss the implications of these observations on the nuclear equation of state, neutron star dynamics and gamma-ray bursts. After Nihil's talk we will have an informal get-together: - brief summary of the VR-funded research environment "Gravitational Radiation and Electromagnetic Astrophysical Transients (GREAT)" by Ariel Goobar (PI) - short, 2-slide introductions where researchers (especially new ones) can say a few words about themselves and their research interests If you plan to present two such slides, please send Stephan Rosswog a short note so he can try to accommodate everyone's presentations. Thank you! Andre da Silva Schneider is inviting you to a scheduled Zoom meeting. Topic: EO Meeting Time: Jun 11, 2020 01:00 PM Stockholm Join Zoom Meeting https://stockholmuniversity.zoom.us/j/64051046387 Meeting ID: 640 5104 6387 One tap mobile +46850520017,,64051046387# Sweden +46850539728,,64051046387# Sweden Dial by your location +46 8 5052 0017 Sweden +46 850 539 728 Sweden +46 8 4468 2488 Sweden +46 8 5050 0828 Sweden +46 8 5050 0829 Sweden +45 32 72 80 11 Denmark +45 89 88 37 88 Denmark +45 32 70 12 06 Denmark +45 32 71 31 57 Denmark +45 32 72 80 10 Denmark +47 7349 4877 Norway +47 2396 0588 Norway +358 9 4245 1488 Finland +358 3 4109 2129 Finland +1 408 652 8184 US (San Jose) +1 646 876 9923 US (New York) +1 669 900 6833 US (San Jose) +1 253 215 8782 US (Tacoma) +1 301 715 8592 US (Germantown) +1 312 626 6799 US (Chicago) +1 346 248 7799 US (Houston) +1 408 638 0968 US (San Jose) Meeting ID: 640 5104 6387 Find your local number: https://stockholmuniversity.zoom.us/u/cbvqMZxtBW Join by SIP 64051046387 at 109.105.112.236 64051046387 at 109.105.112.235 Join by H.323 109.105.112.236 109.105.112.235 Meeting ID: 640 5104 6387 Join by Skype for Business https://stockholmuniversity.zoom.us/skype/64051046387 --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From stephan.rosswog at astro.su.se Fri Jun 12 12:16:08 2020 From: stephan.rosswog at astro.su.se (Stephan Rosswog) Date: Fri, 12 Jun 2020 10:16:08 +0000 Subject: [Okc-wp4] For those interested in yesterday's EO meeting... In-Reply-To: References: <745cb790c28b45ddabd2fd18755e0513@astro.su.se> Message-ID: ...please have a look at: ttt.astro.su.se/~eoco/nihil_sarin_EOtalk.mp4 ttt.astro.su.se/~eoco/GREAT_06112020.mp4 Best Stephan ---------------------------------------------- Prof. Dr. Stephan Rosswog Computational High-Energy Astrophysics The Oskar Klein Centre for Cosmoparticle Physics Department of Astronomy, Stockholm University AlbaNova, Roslagstullbacken 21 SE-10691 Stockholm, Sweden Email: stephan.rosswog at astro.su.se Tel.: +46 (0)8 5537 8529 URL: http://compact-merger.astro.su.se/ -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Tue Sep 22 15:49:18 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Tue, 22 Sep 2020 13:49:18 +0000 Subject: [Okc-wp4] EO meeting Thu Sep 24 @ 13:15 via Zoom Message-ID: Dear colleagues, our first EO meeting of the semester will take place this Thursday, September 24 at 13:15. The meeting will be online. To join access https://stockholmuniversity.zoom.us/j/67587664617 You will be able to enter the meeting room starrting 13:00. See below for other methods to participate. This week Thomas Edwards from Stockholm University will present Title: Searching for General Binary Inspirals with Gravitational Waves Abstract: To recover binary signals from noisy data, matched-filtering techniques are typically required. This is especially true for low-mass systems, with total mass M<10 solar masses, which can inspiral in the LIGO and Virgo frequency bands for thousands of cycles. In this talk, I will focus on the question of whether the current search pipelines could have missed signals from these binaries. In particular, I will focus on the detectability of binary systems whose individual components can have large spin-induced quadrupole moments and small compactness. The quadrupole contributes to the phase evolution of the waveform whereas the compactness affects the merger frequency of the binary. I’ll show that binary black hole templates (with dimensionless quadrupole κ = 1) cannot be reliably used to search for objects with large quadrupoles (κ 􏰀>20) over a wide range of parameter space. This is especially true if the general object is highly spinning and has a larger mass than its binary companion. Finally, I will discuss the work currently being done to enable searches for these general objects. Andre da Silva Schneider is inviting you to a scheduled Zoom meeting. Topic: EO Meeting Time: Sep 24, 2020 01:00 PM Stockholm Join Zoom Meeting https://stockholmuniversity.zoom.us/j/67587664617 Meeting ID: 675 8766 4617 One tap mobile +46850500829,,67587664617# Sweden +46850520017,,67587664617# Sweden Dial by your location +46 8 5050 0829 Sweden +46 8 5052 0017 Sweden +46 850 539 728 Sweden +46 8 4468 2488 Sweden +46 8 5016 3827 Sweden +46 8 5050 0828 Sweden +45 32 72 80 11 Denmark +45 47 37 25 75 Denmark +45 89 88 37 88 Denmark +45 32 70 12 06 Denmark +45 32 71 31 57 Denmark +45 32 72 80 10 Denmark +47 2396 0588 Norway +47 2400 4735 Norway +47 7349 4877 Norway +358 3 4109 2129 Finland +358 9 4245 1488 Finland +358 9 7252 2471 Finland +1 669 900 6833 US (San Jose) +1 253 215 8782 US (Tacoma) +1 301 715 8592 US (Germantown) +1 312 626 6799 US (Chicago) +1 346 248 7799 US (Houston) +1 408 638 0968 US (San Jose) +1 408 652 8184 US (San Jose) +1 646 876 9923 US (New York) Meeting ID: 675 8766 4617 Find your local number: https://stockholmuniversity.zoom.us/u/c22t4pqSP Join by SIP 67587664617 at 109.105.112.236 67587664617 at 109.105.112.235 Join by H.323 109.105.112.236 109.105.112.235 Meeting ID: 675 8766 4617 Join by Skype for Business https://stockholmuniversity.zoom.us/skype/67587664617 --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Thu Sep 24 04:21:42 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Thu, 24 Sep 2020 02:21:42 +0000 Subject: [Okc-wp4] EO meeting Thu Sep 24 @ 13:15 via Zoom In-Reply-To: References: Message-ID: <35e627598f63424aa062dc790f0d5038@astro.su.se> Reminder of the EO meeting this Thursday! --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University ________________________________ From: Okc-wp4-at-fysik.su.se on behalf of Andre Schneider Sent: Tuesday, September 22, 2020 3:49:18 PM To: Okc-wp4 at fysik.su.se; Thomas Edwards Subject: [Okc-wp4] EO meeting Thu Sep 24 @ 13:15 via Zoom Dear colleagues, our first EO meeting of the semester will take place this Thursday, September 24 at 13:15. The meeting will be online. To join access https://stockholmuniversity.zoom.us/j/67587664617 You will be able to enter the meeting room starrting 13:00. See below for other methods to participate. This week Thomas Edwards from Stockholm University will present Title: Searching for General Binary Inspirals with Gravitational Waves Abstract: To recover binary signals from noisy data, matched-filtering techniques are typically required. This is especially true for low-mass systems, with total mass M<10 solar masses, which can inspiral in the LIGO and Virgo frequency bands for thousands of cycles. In this talk, I will focus on the question of whether the current search pipelines could have missed signals from these binaries. In particular, I will focus on the detectability of binary systems whose individual components can have large spin-induced quadrupole moments and small compactness. The quadrupole contributes to the phase evolution of the waveform whereas the compactness affects the merger frequency of the binary. I’ll show that binary black hole templates (with dimensionless quadrupole κ = 1) cannot be reliably used to search for objects with large quadrupoles (κ 􏰀>20) over a wide range of parameter space. This is especially true if the general object is highly spinning and has a larger mass than its binary companion. Finally, I will discuss the work currently being done to enable searches for these general objects. Andre da Silva Schneider is inviting you to a scheduled Zoom meeting. Topic: EO Meeting Time: Sep 24, 2020 01:00 PM Stockholm Join Zoom Meeting https://stockholmuniversity.zoom.us/j/67587664617 Meeting ID: 675 8766 4617 One tap mobile +46850500829,,67587664617# Sweden +46850520017,,67587664617# Sweden Dial by your location +46 8 5050 0829 Sweden +46 8 5052 0017 Sweden +46 850 539 728 Sweden +46 8 4468 2488 Sweden +46 8 5016 3827 Sweden +46 8 5050 0828 Sweden +45 32 72 80 11 Denmark +45 47 37 25 75 Denmark +45 89 88 37 88 Denmark +45 32 70 12 06 Denmark +45 32 71 31 57 Denmark +45 32 72 80 10 Denmark +47 2396 0588 Norway +47 2400 4735 Norway +47 7349 4877 Norway +358 3 4109 2129 Finland +358 9 4245 1488 Finland +358 9 7252 2471 Finland +1 669 900 6833 US (San Jose) +1 253 215 8782 US (Tacoma) +1 301 715 8592 US (Germantown) +1 312 626 6799 US (Chicago) +1 346 248 7799 US (Houston) +1 408 638 0968 US (San Jose) +1 408 652 8184 US (San Jose) +1 646 876 9923 US (New York) Meeting ID: 675 8766 4617 Find your local number: https://stockholmuniversity.zoom.us/u/c22t4pqSP Join by SIP 67587664617 at 109.105.112.236 67587664617 at 109.105.112.235 Join by H.323 109.105.112.236 109.105.112.235 Meeting ID: 675 8766 4617 Join by Skype for Business https://stockholmuniversity.zoom.us/skype/67587664617 --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Tue Oct 6 17:02:20 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Tue, 6 Oct 2020 15:02:20 +0000 Subject: [Okc-wp4] EO meeting Thu Oct 8 @ 13:15 via Zoom Message-ID: <2c41a616e46840b3bf0eecdecadb2a56@astro.su.se> Dear colleagues, our next EO meeting will take place this Thursday Oct 8 at 13:15 via Zoom. The meeting will be online. To join access https://stockholmuniversity.zoom.us/j/61497979368 You will be able to enter the meeting room from 13:00. See below for other methods to participate. This week Tuomas Kangas from KTH will present Title: The behavior of GRB afterglows at late times in the 'standard' afterglow model Abstract: Interpreting late-time observations of the afterglows of gamma-ray bursts is an important part of understanding the physics behind these explosive events. In order to study the energetics (and thus power source) of the GRB, and the mechanism of the so-called jet break -- a steepening in the afterglow light curve caused by relativistic beaming effects -- it is important to observe the afterglow after the jet break at multiple wavelengths. In this talk I will present two connected afterglow modeling studies that demonstrate this. Firstly, I will show results from the follow-up and numerical modeling of GRBs 160509A and 160625B as part of a long-term project targeting energetic GRBs detected by Fermi/LAT and discuss the implications of their problematic late-time behavior, especially in the radio. Second, I will present an effort to analytically model a larger sample of other afterglows observed after the jet break, from X-ray to radio, and how their late-time light curves, again especially in the radio, may deviate from the 'standard' picture of GRB afterglows. Andre da Silva Schneider is inviting you to a scheduled Zoom meeting. Topic: EO Meeting Time: Oct 8, 2020 01:00 PM Stockholm Join Zoom Meeting https://stockholmuniversity.zoom.us/j/61497979368 Meeting ID: 614 9797 9368 One tap mobile +46844682488,,61497979368# Sweden +46850163827,,61497979368# Sweden Dial by your location +46 8 4468 2488 Sweden +46 8 5016 3827 Sweden +46 8 5050 0828 Sweden +46 8 5050 0829 Sweden +46 8 5052 0017 Sweden +46 850 539 728 Sweden Meeting ID: 614 9797 9368 Find your local number: https://stockholmuniversity.zoom.us/u/ccbROH7HuR Join by SIP 61497979368 at 109.105.112.236 61497979368 at 109.105.112.235 Join by H.323 109.105.112.236 109.105.112.235 Meeting ID: 614 9797 9368 Join by Skype for Business https://stockholmuniversity.zoom.us/skype/61497979368 --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Thu Oct 8 04:10:15 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Thu, 8 Oct 2020 02:10:15 +0000 Subject: [Okc-wp4] EO meeting Thu Oct 8 @ 13:15 via Zoom Message-ID: <7068f4df-0f92-4a50-8c26-c0bd356da8cc@email.android.com> Reminder of the EO meeting this afternoon. On Oct 6, 2020 12:02, Andre Schneider wrote: Dear colleagues, our next EO meeting will take place this Thursday Oct 8 at 13:15 via Zoom. The meeting will be online. To join access https://stockholmuniversity.zoom.us/j/61497979368 You will be able to enter the meeting room from 13:00. See below for other methods to participate. This week Tuomas Kangas from KTH will present Title: The behavior of GRB afterglows at late times in the 'standard' afterglow model Abstract: Interpreting late-time observations of the afterglows of gamma-ray bursts is an important part of understanding the physics behind these explosive events. In order to study the energetics (and thus power source) of the GRB, and the mechanism of the so-called jet break -- a steepening in the afterglow light curve caused by relativistic beaming effects -- it is important to observe the afterglow after the jet break at multiple wavelengths. In this talk I will present two connected afterglow modeling studies that demonstrate this. Firstly, I will show results from the follow-up and numerical modeling of GRBs 160509A and 160625B as part of a long-term project targeting energetic GRBs detected by Fermi/LAT and discuss the implications of their problematic late-time behavior, especially in the radio. Second, I will present an effort to analytically model a larger sample of other afterglows observed after the jet break, from X-ray to radio, and how their late-time light curves, again especially in the radio, may deviate from the 'standard' picture of GRB afterglows. Andre da Silva Schneider is inviting you to a scheduled Zoom meeting. Topic: EO Meeting Time: Oct 8, 2020 01:00 PM Stockholm Join Zoom Meeting https://stockholmuniversity.zoom.us/j/61497979368 Meeting ID: 614 9797 9368 One tap mobile +46844682488,,61497979368# Sweden +46850163827,,61497979368# Sweden Dial by your location +46 8 4468 2488 Sweden +46 8 5016 3827 Sweden +46 8 5050 0828 Sweden +46 8 5050 0829 Sweden +46 8 5052 0017 Sweden +46 850 539 728 Sweden Meeting ID: 614 9797 9368 Find your local number: https://stockholmuniversity.zoom.us/u/ccbROH7HuR Join by SIP 61497979368 at 109.105.112.236 61497979368 at 109.105.112.235 Join by H.323 109.105.112.236 109.105.112.235 Meeting ID: 614 9797 9368 Join by Skype for Business https://stockholmuniversity.zoom.us/skype/61497979368 --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Mon Oct 19 22:52:52 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Mon, 19 Oct 2020 20:52:52 +0000 Subject: [Okc-wp4] EO meeting Thu Oct 22 @ 13:15 via Zoom Message-ID: Dear colleagues, our next EO meeting will take place this Thursday Oct 22 at 13:15 via Zoom. The meeting will be online. To join access https://stockholmuniversity.zoom.us/j/61161537684 You will be able to enter the meeting room from 13:00. See below for other methods to participate. This week Lorenzo Nativi from Stockholm Univrsity will present Title: Can jets make radioactively-powered emission from neutron star mergers bluer? Abstract: Besides being sources of gravitational waves, neutron star mergers eject neutron-rich material suitable for the production of heavy r-process nuclei. The radioactive decay of these freshly synthesised elements powers a rapidly evolving thermal transient (named "macronova" or "kilonova"), whose spectral properties strongly depend on the ejecta composition. In particular, the high opacities associated to the heaviest nuclei powers a transient peaking in the red-infrared bands over time scales of weeks. The first detection of a binary neutron star merger was also accompanied by the detection of a relativistic jet. Despite being ascertained the presence of two dynamical components, mildly-relativistic ejecta and ultra-relativistic outflow, the observational consequences of the interplay between the two is still unclear. In this talk I will discuss the consequences of jet propagation on the radioactively powered transient, by simulating the interaction with dedicated special-relativistic hydrodynamics simulations. Firstly, I will present the observational evidence of the two dynamical components. Second, I will discuss the simulations setup focusing on the initial ejecta distribution as obtained from previous dedicated works. Lastly, I will show how a relativistic jet can "punch-away" a fraction of high-opacity material before the brightening of the macronova, resulting in the transient getting brighter and bluer for on-axis observers in the first few days. Andre da Silva Schneider is inviting you to a scheduled Zoom meeting. Topic: EO Meeting Time: Oct 22, 2020 01:00 PM Stockholm Join Zoom Meeting https://stockholmuniversity.zoom.us/j/61161537684 Meeting ID: 611 6153 7684 One tap mobile +46844682488,,61161537684# Sweden +46850163827,,61161537684# Sweden Dial by your location +46 8 4468 2488 Sweden +46 8 5016 3827 Sweden +46 8 5050 0828 Sweden +46 8 5050 0829 Sweden +46 8 5052 0017 Sweden +46 850 539 728 Sweden Meeting ID: 611 6153 7684 Find your local number: https://stockholmuniversity.zoom.us/u/cdoda3w2Mr Join by SIP 61161537684 at 109.105.112.236 61161537684 at 109.105.112.235 Join by H.323 109.105.112.236 109.105.112.235 Meeting ID: 611 6153 7684 Join by Skype for Business https://stockholmuniversity.zoom.us/skype/61161537684 --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Thu Oct 22 03:22:24 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Thu, 22 Oct 2020 01:22:24 +0000 Subject: [Okc-wp4] EO meeting Thu Oct 22 @ 13:15 via Zoom In-Reply-To: References: Message-ID: Reminder of the EO meeting today at 13:15. https://stockholmuniversity.zoom.us/j/61161537684 --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University ________________________________ From: Okc-wp4-at-fysik.su.se on behalf of Andre Schneider Sent: Monday, October 19, 2020 10:52:52 PM To: Okc-wp4 at fysik.su.se; people at nordita.org Subject: [Okc-wp4] EO meeting Thu Oct 22 @ 13:15 via Zoom Dear colleagues, our next EO meeting will take place this Thursday Oct 22 at 13:15 via Zoom. The meeting will be online. To join access https://stockholmuniversity.zoom.us/j/61161537684 You will be able to enter the meeting room from 13:00. See below for other methods to participate. This week Lorenzo Nativi from Stockholm Univrsity will present Title: Can jets make radioactively-powered emission from neutron star mergers bluer? Abstract: Besides being sources of gravitational waves, neutron star mergers eject neutron-rich material suitable for the production of heavy r-process nuclei. The radioactive decay of these freshly synthesised elements powers a rapidly evolving thermal transient (named "macronova" or "kilonova"), whose spectral properties strongly depend on the ejecta composition. In particular, the high opacities associated to the heaviest nuclei powers a transient peaking in the red-infrared bands over time scales of weeks. The first detection of a binary neutron star merger was also accompanied by the detection of a relativistic jet. Despite being ascertained the presence of two dynamical components, mildly-relativistic ejecta and ultra-relativistic outflow, the observational consequences of the interplay between the two is still unclear. In this talk I will discuss the consequences of jet propagation on the radioactively powered transient, by simulating the interaction with dedicated special-relativistic hydrodynamics simulations. Firstly, I will present the observational evidence of the two dynamical components. Second, I will discuss the simulations setup focusing on the initial ejecta distribution as obtained from previous dedicated works. Lastly, I will show how a relativistic jet can "punch-away" a fraction of high-opacity material before the brightening of the macronova, resulting in the transient getting brighter and bluer for on-axis observers in the first few days. Andre da Silva Schneider is inviting you to a scheduled Zoom meeting. Topic: EO Meeting Time: Oct 22, 2020 01:00 PM Stockholm Join Zoom Meeting https://stockholmuniversity.zoom.us/j/61161537684 Meeting ID: 611 6153 7684 One tap mobile +46844682488,,61161537684# Sweden +46850163827,,61161537684# Sweden Dial by your location +46 8 4468 2488 Sweden +46 8 5016 3827 Sweden +46 8 5050 0828 Sweden +46 8 5050 0829 Sweden +46 8 5052 0017 Sweden +46 850 539 728 Sweden Meeting ID: 611 6153 7684 Find your local number: https://stockholmuniversity.zoom.us/u/cdoda3w2Mr Join by SIP 61161537684 at 109.105.112.236 61161537684 at 109.105.112.235 Join by H.323 109.105.112.236 109.105.112.235 Meeting ID: 611 6153 7684 Join by Skype for Business https://stockholmuniversity.zoom.us/skype/61161537684 --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Thu Oct 22 15:05:12 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Thu, 22 Oct 2020 13:05:12 +0000 Subject: [Okc-wp4] EO meeting Thu Oct 22 @ 13:15 via Zoom In-Reply-To: References: , Message-ID: <8f1ec22113b14ee7b0130a74fff9dbf8@astro.su.se> Hi, if you would like to watch a recording of this week's EO meeting, it is now available in the link below: https://drive.google.com/drive/folders/1YaKCwf4M8oEHUOh8o6cX5Ls4t8rX5LGY?usp=sharing I intend to record and upload the talks to this folder from now on if the speaker has no objections to it. Best, --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University ________________________________ From: Okc-wp4-at-fysik.su.se on behalf of Andre Schneider Sent: Thursday, October 22, 2020 3:22:24 AM To: Okc-wp4 at fysik.su.se; people at nordita.org Subject: Re: [Okc-wp4] EO meeting Thu Oct 22 @ 13:15 via Zoom Reminder of the EO meeting today at 13:15. https://stockholmuniversity.zoom.us/j/61161537684 --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University ________________________________ From: Okc-wp4-at-fysik.su.se on behalf of Andre Schneider Sent: Monday, October 19, 2020 10:52:52 PM To: Okc-wp4 at fysik.su.se; people at nordita.org Subject: [Okc-wp4] EO meeting Thu Oct 22 @ 13:15 via Zoom Dear colleagues, our next EO meeting will take place this Thursday Oct 22 at 13:15 via Zoom. The meeting will be online. To join access https://stockholmuniversity.zoom.us/j/61161537684 You will be able to enter the meeting room from 13:00. See below for other methods to participate. This week Lorenzo Nativi from Stockholm Univrsity will present Title: Can jets make radioactively-powered emission from neutron star mergers bluer? Abstract: Besides being sources of gravitational waves, neutron star mergers eject neutron-rich material suitable for the production of heavy r-process nuclei. The radioactive decay of these freshly synthesised elements powers a rapidly evolving thermal transient (named "macronova" or "kilonova"), whose spectral properties strongly depend on the ejecta composition. In particular, the high opacities associated to the heaviest nuclei powers a transient peaking in the red-infrared bands over time scales of weeks. The first detection of a binary neutron star merger was also accompanied by the detection of a relativistic jet. Despite being ascertained the presence of two dynamical components, mildly-relativistic ejecta and ultra-relativistic outflow, the observational consequences of the interplay between the two is still unclear. In this talk I will discuss the consequences of jet propagation on the radioactively powered transient, by simulating the interaction with dedicated special-relativistic hydrodynamics simulations. Firstly, I will present the observational evidence of the two dynamical components. Second, I will discuss the simulations setup focusing on the initial ejecta distribution as obtained from previous dedicated works. Lastly, I will show how a relativistic jet can "punch-away" a fraction of high-opacity material before the brightening of the macronova, resulting in the transient getting brighter and bluer for on-axis observers in the first few days. Andre da Silva Schneider is inviting you to a scheduled Zoom meeting. Topic: EO Meeting Time: Oct 22, 2020 01:00 PM Stockholm Join Zoom Meeting https://stockholmuniversity.zoom.us/j/61161537684 Meeting ID: 611 6153 7684 One tap mobile +46844682488,,61161537684# Sweden +46850163827,,61161537684# Sweden Dial by your location +46 8 4468 2488 Sweden +46 8 5016 3827 Sweden +46 8 5050 0828 Sweden +46 8 5050 0829 Sweden +46 8 5052 0017 Sweden +46 850 539 728 Sweden Meeting ID: 611 6153 7684 Find your local number: https://stockholmuniversity.zoom.us/u/cdoda3w2Mr Join by SIP 61161537684 at 109.105.112.236 61161537684 at 109.105.112.235 Join by H.323 109.105.112.236 109.105.112.235 Meeting ID: 611 6153 7684 Join by Skype for Business https://stockholmuniversity.zoom.us/skype/61161537684 --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Tue Nov 3 15:53:18 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Tue, 3 Nov 2020 14:53:18 +0000 Subject: [Okc-wp4] EO meeting Thu Nov 5 @ 13:15 via Zoom Message-ID: <11734d5f9e67407792b7d33eda5758db@astro.su.se> Dear colleagues, our next EO meeting will take place this Thursday Nov 5 at 13:15 via Zoom. The meeting will be online. To join access https://stockholmuniversity.zoom.us/j/65928545270 You will be able to enter the meeting room from 13:00. See below for other methods to participate. This week Ana Sagués Carracedo from Stockholm University will present Title: Constraints on detection rate and properties of kilonovae with the Zwicky Transient Facility Abstract: LIGO and VIRGO's third observing run concluded, and 13 merger candidates involving at least one neutron star were followed-up by optical wide-field surveys like the Zwicky Transient Facility (ZTF). The observations and kilonova identification have proven to be challenging. Some of the difficulties rase from poor localization maps together with the lack of knowledge of a kilonovae population that is intrinsically fainter than common supernovae and with rapid evolution. After an extraordinary effort from the multimessenger astronomy community, no electromagnetic source has been identified as a confident counterpart of gravitational waves signals. During my talk, I am going to show you the scientific implications of non-detections recently published using ZTF data. We are able to competitively constraint the detection rate of kilonovae (https://arxiv.org/pdf/2008.00008.pdf) as well as its luminosity function (https://arxiv.org/pdf/2006.11306.pdf). With deep enough observations and assuming theoretical models, we are able to put strong constraints on the ejecta parameters for the first neutron star-black hole (NSBH) merger candidates in gravitational waves (https://arxiv.org/pdf/2009.07210.pdf). See you then! Andre da Silva Schneider is inviting you to a scheduled Zoom meeting. Topic: EO Meeting Time: Nov 5, 2020 01:00 PM Stockholm Every 2 weeks on Thu, 4 occurrence(s) Nov 5, 2020 01:00 PM Nov 19, 2020 01:00 PM Dec 3, 2020 01:00 PM Dec 17, 2020 01:00 PM Please download and import the following iCalendar (.ics) files to your calendar system. Weekly: https://stockholmuniversity.zoom.us/meeting/u5EkdeGtqj4oHdR8xLPfgh3x0S0IUQWMfTFX/ics?icsToken=98tyKu-tpzkiH9CQsh6HR_MMHYjoWe_wiCVBgqdvxAfJMyZUalDuZtESG4dOJ_XW Join Zoom Meeting https://stockholmuniversity.zoom.us/j/65928545270 Meeting ID: 659 2854 5270 One tap mobile +46850520017,,65928545270# Sweden +46850539728,,65928545270# Sweden Dial by your location +46 8 5052 0017 Sweden +46 850 539 728 Sweden +46 8 4468 2488 Sweden +46 8 5016 3827 Sweden +46 8 5050 0828 Sweden +46 8 5050 0829 Sweden Meeting ID: 659 2854 5270 Find your local number: https://stockholmuniversity.zoom.us/u/ccFBaMkcFb Join by SIP 65928545270 at 109.105.112.236 65928545270 at 109.105.112.235 Join by H.323 109.105.112.236 109.105.112.235 Meeting ID: 659 2854 5270 Join by Skype for Business https://stockholmuniversity.zoom.us/skype/65928545270 --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Thu Nov 5 02:41:28 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Thu, 5 Nov 2020 01:41:28 +0000 Subject: [Okc-wp4] EO meeting Thu Nov 5 @ 13:15 via Zoom In-Reply-To: <11734d5f9e67407792b7d33eda5758db@astro.su.se> References: <11734d5f9e67407792b7d33eda5758db@astro.su.se> Message-ID: <84dcf55a-4224-4782-962c-d15e45b11886@email.android.com> Reminder of the EO meeting this afternoon! On Nov 3, 2020 11:53, Andre Schneider wrote: Dear colleagues, our next EO meeting will take place this Thursday Nov 5 at 13:15 via Zoom. The meeting will be online. To join access https://stockholmuniversity.zoom.us/j/65928545270 You will be able to enter the meeting room from 13:00. See below for other methods to participate. This week Ana Sagués Carracedo from Stockholm University will present Title: Constraints on detection rate and properties of kilonovae with the Zwicky Transient Facility Abstract: LIGO and VIRGO's third observing run concluded, and 13 merger candidates involving at least one neutron star were followed-up by optical wide-field surveys like the Zwicky Transient Facility (ZTF). The observations and kilonova identification have proven to be challenging. Some of the difficulties rase from poor localization maps together with the lack of knowledge of a kilonovae population that is intrinsically fainter than common supernovae and with rapid evolution. After an extraordinary effort from the multimessenger astronomy community, no electromagnetic source has been identified as a confident counterpart of gravitational waves signals. During my talk, I am going to show you the scientific implications of non-detections recently published using ZTF data. We are able to competitively constraint the detection rate of kilonovae (https://arxiv.org/pdf/2008.00008.pdf) as well as its luminosity function (https://arxiv.org/pdf/2006.11306.pdf). With deep enough observations and assuming theoretical models, we are able to put strong constraints on the ejecta parameters for the first neutron star-black hole (NSBH) merger candidates in gravitational waves (https://arxiv.org/pdf/2009.07210.pdf). See you then! Andre da Silva Schneider is inviting you to a scheduled Zoom meeting. Topic: EO Meeting Time: Nov 5, 2020 01:00 PM Stockholm Every 2 weeks on Thu, 4 occurrence(s) Nov 5, 2020 01:00 PM Nov 19, 2020 01:00 PM Dec 3, 2020 01:00 PM Dec 17, 2020 01:00 PM Please download and import the following iCalendar (.ics) files to your calendar system. Weekly: https://stockholmuniversity.zoom.us/meeting/u5EkdeGtqj4oHdR8xLPfgh3x0S0IUQWMfTFX/ics?icsToken=98tyKu-tpzkiH9CQsh6HR_MMHYjoWe_wiCVBgqdvxAfJMyZUalDuZtESG4dOJ_XW Join Zoom Meeting https://stockholmuniversity.zoom.us/j/65928545270 Meeting ID: 659 2854 5270 One tap mobile +46850520017,,65928545270# Sweden +46850539728,,65928545270# Sweden Dial by your location +46 8 5052 0017 Sweden +46 850 539 728 Sweden +46 8 4468 2488 Sweden +46 8 5016 3827 Sweden +46 8 5050 0828 Sweden +46 8 5050 0829 Sweden Meeting ID: 659 2854 5270 Find your local number: https://stockholmuniversity.zoom.us/u/ccFBaMkcFb Join by SIP 65928545270 at 109.105.112.236 65928545270 at 109.105.112.235 Join by H.323 109.105.112.236 109.105.112.235 Meeting ID: 659 2854 5270 Join by Skype for Business https://stockholmuniversity.zoom.us/skype/65928545270 --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Mon Nov 16 23:50:39 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Mon, 16 Nov 2020 22:50:39 +0000 Subject: [Okc-wp4] EO meeting Thu Nov 19 @ 13:15 via Zoom Message-ID: <3fc62b460af146d4995014775dcda8af@astro.su.se> Dear colleagues, our next EO meeting will take place this Thursday Nov 19 at 13:15 via Zoom. The meeting will be online. To join access https://stockholmuniversity.zoom.us/j/65928545270 You will be able to enter the meeting room from 13:00. See below for other methods to participate. This week Erik Kool from Stockholm University will present Title: TDE or not TDE, that is the question: The puzzle of the energetic nuclear transient AT 2017gbl Abstract: Current transient research is heavily biased towards optical discovery, with widefield surveys such as ZTF, Pan-STARRS and ATLAS scouring the sky for transients on a nightly basis. As a consequence, transient events that are affected by (heavy) dust exctinction are often missed, or not classified. For example, tidal disruption events (TDE) are disproportionally discovered in post-starburst galaxies with little to no dust content, suggesting a preference for such an environment. However, recent discoveries of TDE candidates by small scale infrared (IR) searches targeting luminous infrared galaxies (LIRGs), starbursting galaxies that are host to copious amounts of dust, suggest LIRGs may in fact have inflated rates of TDEs, hidden from view in the optical due to significant dust extinction. In this talk I present a case study of the extremely IR-energetic nuclear transient AT 2017gbl, discovered as part of a targeted IR monitoring program of LIRGs. AT 2017gbl was barely detected in the optical, which prohibited traditional classification through optical spectra. Instead, a large follow up effort ranging from the X-ray through adaptive-optics assisted IR photometry to very large baseline radio interferometry was conducted to determine the properties and nature of this transient. The analysis of this extensive data set provided lots of puzzle pieces, and I will discuss whether they fit together to show a luminous supernova, a TDE, or perhaps increased accretion by an active galactic nucleus. See you then! Andre da Silva Schneider is inviting you to a scheduled Zoom meeting. Topic: EO Meeting Time: Nov 5, 2020 01:00 PM Stockholm Every 2 weeks on Thu, 4 occurrence(s) Nov 5, 2020 01:00 PM Nov 19, 2020 01:00 PM Dec 3, 2020 01:00 PM Dec 17, 2020 01:00 PM Please download and import the following iCalendar (.ics) files to your calendar system. Weekly: https://stockholmuniversity.zoom.us/meeting/u5EkdeGtqj4oHdR8xLPfgh3x0S0IUQWMfTFX/ics?icsToken=98tyKu-tpzkiH9CQsh6HR_MMHYjoWe_wiCVBgqdvxAfJMyZUalDuZtESG4dOJ_XW Join Zoom Meeting https://stockholmuniversity.zoom.us/j/65928545270 Meeting ID: 659 2854 5270 One tap mobile +46850520017,,65928545270# Sweden +46850539728,,65928545270# Sweden Dial by your location +46 8 5052 0017 Sweden +46 850 539 728 Sweden +46 8 4468 2488 Sweden +46 8 5016 3827 Sweden +46 8 5050 0828 Sweden +46 8 5050 0829 Sweden Meeting ID: 659 2854 5270 Find your local number: https://stockholmuniversity.zoom.us/u/ccFBaMkcFb Join by SIP 65928545270 at 109.105.112.236 65928545270 at 109.105.112.235 Join by H.323 109.105.112.236 109.105.112.235 Meeting ID: 659 2854 5270 Join by Skype for Business https://stockholmuniversity.zoom.us/skype/65928545270 -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Wed Nov 18 23:24:33 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Wed, 18 Nov 2020 22:24:33 +0000 Subject: [Okc-wp4] EO meeting Thu Nov 19 @ 13:15 via Zoom In-Reply-To: <3fc62b460af146d4995014775dcda8af@astro.su.se> References: <3fc62b460af146d4995014775dcda8af@astro.su.se> Message-ID: Reminder of the EO meeting this Thursday. --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University ________________________________ From: Okc-wp4-at-fysik.su.se on behalf of Andre Schneider Sent: Monday, November 16, 2020 11:50:39 PM To: Okc-wp4 at fysik.su.se; people at nordita.org Subject: [Okc-wp4] EO meeting Thu Nov 19 @ 13:15 via Zoom Dear colleagues, our next EO meeting will take place this Thursday Nov 19 at 13:15 via Zoom. The meeting will be online. To join access https://stockholmuniversity.zoom.us/j/65928545270 You will be able to enter the meeting room from 13:00. See below for other methods to participate. This week Erik Kool from Stockholm University will present Title: TDE or not TDE, that is the question: The puzzle of the energetic nuclear transient AT 2017gbl Abstract: Current transient research is heavily biased towards optical discovery, with widefield surveys such as ZTF, Pan-STARRS and ATLAS scouring the sky for transients on a nightly basis. As a consequence, transient events that are affected by (heavy) dust exctinction are often missed, or not classified. For example, tidal disruption events (TDE) are disproportionally discovered in post-starburst galaxies with little to no dust content, suggesting a preference for such an environment. However, recent discoveries of TDE candidates by small scale infrared (IR) searches targeting luminous infrared galaxies (LIRGs), starbursting galaxies that are host to copious amounts of dust, suggest LIRGs may in fact have inflated rates of TDEs, hidden from view in the optical due to significant dust extinction. In this talk I present a case study of the extremely IR-energetic nuclear transient AT 2017gbl, discovered as part of a targeted IR monitoring program of LIRGs. AT 2017gbl was barely detected in the optical, which prohibited traditional classification through optical spectra. Instead, a large follow up effort ranging from the X-ray through adaptive-optics assisted IR photometry to very large baseline radio interferometry was conducted to determine the properties and nature of this transient. The analysis of this extensive data set provided lots of puzzle pieces, and I will discuss whether they fit together to show a luminous supernova, a TDE, or perhaps increased accretion by an active galactic nucleus. See you then! Andre da Silva Schneider is inviting you to a scheduled Zoom meeting. Topic: EO Meeting Time: Nov 5, 2020 01:00 PM Stockholm Every 2 weeks on Thu, 4 occurrence(s) Nov 5, 2020 01:00 PM Nov 19, 2020 01:00 PM Dec 3, 2020 01:00 PM Dec 17, 2020 01:00 PM Please download and import the following iCalendar (.ics) files to your calendar system. Weekly: https://stockholmuniversity.zoom.us/meeting/u5EkdeGtqj4oHdR8xLPfgh3x0S0IUQWMfTFX/ics?icsToken=98tyKu-tpzkiH9CQsh6HR_MMHYjoWe_wiCVBgqdvxAfJMyZUalDuZtESG4dOJ_XW Join Zoom Meeting https://stockholmuniversity.zoom.us/j/65928545270 Meeting ID: 659 2854 5270 One tap mobile +46850520017,,65928545270# Sweden +46850539728,,65928545270# Sweden Dial by your location +46 8 5052 0017 Sweden +46 850 539 728 Sweden +46 8 4468 2488 Sweden +46 8 5016 3827 Sweden +46 8 5050 0828 Sweden +46 8 5050 0829 Sweden Meeting ID: 659 2854 5270 Find your local number: https://stockholmuniversity.zoom.us/u/ccFBaMkcFb Join by SIP 65928545270 at 109.105.112.236 65928545270 at 109.105.112.235 Join by H.323 109.105.112.236 109.105.112.235 Meeting ID: 659 2854 5270 Join by Skype for Business https://stockholmuniversity.zoom.us/skype/65928545270 -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Mon Nov 30 21:04:28 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Mon, 30 Nov 2020 20:04:28 +0000 Subject: [Okc-wp4] EO meeting Thu Dec 03 @ 13:15 via Zoom Message-ID: <9494574e75204344943cfd2ed11945f2@astro.su.se> Dear colleagues, our next EO meeting will take place this Thursday Dec 03 at 13:15 via Zoom. The meeting will be online. To join access https://stockholmuniversity.zoom.us/j/65928545270 You will be able to enter the meeting room from 13:00. See below for other methods to participate. This week Patryk Pjanka from Stockholm University will present Title: The power of extragalactic jets Abstract: In recent years, advancements in theoretical understanding and numerical modelling of relativistic jets have resulted in a number of predictions concerning parameters of the jet ejection process. Many of them build upon our knowledge of the total power carried by the jet which, however, is not a quantity that is straightforward to measure. Traditionally, it has been common to estimate the jet power using energy content of radio lobes in which the jet energy is dissipated (Rawlings & Saunders 1991). Today, due to progress in observational techniques and theoretical models, several other methods are available. Unfortunately, depending on the parameters and assumptions used, these methods can provide widely different estimations for a given source. I will review several methods currently available for jet power estimation and, using data available in the literature, present similarities and differences between their results, along with possible explanations for the discrepancies found. See you then! Andre da Silva Schneider is inviting you to a scheduled Zoom meeting. Topic: EO Meeting Time: Nov 5, 2020 01:00 PM Stockholm Every 2 weeks on Thu, 4 occurrence(s) Nov 5, 2020 01:00 PM Nov 19, 2020 01:00 PM Dec 3, 2020 01:00 PM Dec 17, 2020 01:00 PM Please download and import the following iCalendar (.ics) files to your calendar system. Weekly: https://stockholmuniversity.zoom.us/meeting/u5EkdeGtqj4oHdR8xLPfgh3x0S0IUQWMfTFX/ics?icsToken=98tyKu-tpzkiH9CQsh6HR_MMHYjoWe_wiCVBgqdvxAfJMyZUalDuZtESG4dOJ_XW Join Zoom Meeting https://stockholmuniversity.zoom.us/j/65928545270 Meeting ID: 659 2854 5270 One tap mobile +46850520017,,65928545270# Sweden +46850539728,,65928545270# Sweden Dial by your location +46 8 5052 0017 Sweden +46 850 539 728 Sweden +46 8 4468 2488 Sweden +46 8 5016 3827 Sweden +46 8 5050 0828 Sweden +46 8 5050 0829 Sweden Meeting ID: 659 2854 5270 Find your local number: https://stockholmuniversity.zoom.us/u/ccFBaMkcFb Join by SIP 65928545270 at 109.105.112.236 65928545270 at 109.105.112.235 Join by H.323 109.105.112.236 109.105.112.235 Meeting ID: 659 2854 5270 Join by Skype for Business https://stockholmuniversity.zoom.us/skype/65928545270 --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Thu Dec 3 02:16:28 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Thu, 3 Dec 2020 01:16:28 +0000 Subject: [Okc-wp4] EO meeting Thu Dec 03 @ 13:15 via Zoom In-Reply-To: <9494574e75204344943cfd2ed11945f2@astro.su.se> References: <9494574e75204344943cfd2ed11945f2@astro.su.se> Message-ID: Reminder of today's EO meeting! --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University ________________________________ From: Okc-wp4-at-fysik.su.se on behalf of Andre Schneider Sent: Monday, November 30, 2020 9:04:28 PM To: Okc-wp4 at fysik.su.se; people at nordita.org Subject: [Okc-wp4] EO meeting Thu Dec 03 @ 13:15 via Zoom Dear colleagues, our next EO meeting will take place this Thursday Dec 03 at 13:15 via Zoom. The meeting will be online. To join access https://stockholmuniversity.zoom.us/j/65928545270 You will be able to enter the meeting room from 13:00. See below for other methods to participate. This week Patryk Pjanka from Stockholm University will present Title: The power of extragalactic jets Abstract: In recent years, advancements in theoretical understanding and numerical modelling of relativistic jets have resulted in a number of predictions concerning parameters of the jet ejection process. Many of them build upon our knowledge of the total power carried by the jet which, however, is not a quantity that is straightforward to measure. Traditionally, it has been common to estimate the jet power using energy content of radio lobes in which the jet energy is dissipated (Rawlings & Saunders 1991). Today, due to progress in observational techniques and theoretical models, several other methods are available. Unfortunately, depending on the parameters and assumptions used, these methods can provide widely different estimations for a given source. I will review several methods currently available for jet power estimation and, using data available in the literature, present similarities and differences between their results, along with possible explanations for the discrepancies found. See you then! Andre da Silva Schneider is inviting you to a scheduled Zoom meeting. Topic: EO Meeting Time: Nov 5, 2020 01:00 PM Stockholm Every 2 weeks on Thu, 4 occurrence(s) Nov 5, 2020 01:00 PM Nov 19, 2020 01:00 PM Dec 3, 2020 01:00 PM Dec 17, 2020 01:00 PM Please download and import the following iCalendar (.ics) files to your calendar system. Weekly: https://stockholmuniversity.zoom.us/meeting/u5EkdeGtqj4oHdR8xLPfgh3x0S0IUQWMfTFX/ics?icsToken=98tyKu-tpzkiH9CQsh6HR_MMHYjoWe_wiCVBgqdvxAfJMyZUalDuZtESG4dOJ_XW Join Zoom Meeting https://stockholmuniversity.zoom.us/j/65928545270 Meeting ID: 659 2854 5270 One tap mobile +46850520017,,65928545270# Sweden +46850539728,,65928545270# Sweden Dial by your location +46 8 5052 0017 Sweden +46 850 539 728 Sweden +46 8 4468 2488 Sweden +46 8 5016 3827 Sweden +46 8 5050 0828 Sweden +46 8 5050 0829 Sweden Meeting ID: 659 2854 5270 Find your local number: https://stockholmuniversity.zoom.us/u/ccFBaMkcFb Join by SIP 65928545270 at 109.105.112.236 65928545270 at 109.105.112.235 Join by H.323 109.105.112.236 109.105.112.235 Meeting ID: 659 2854 5270 Join by Skype for Business https://stockholmuniversity.zoom.us/skype/65928545270 --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Tue Dec 15 15:17:20 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Tue, 15 Dec 2020 14:17:20 +0000 Subject: [Okc-wp4] EO meeting Thu Dec 17 @ 13:15 via Zoom Message-ID: <373b6b654a244f7cbeb2264c98820e00@astro.su.se> Dear colleagues, our next EO meeting will take place this Thursday Dec 17 at 13:15 via Zoom. The meeting will be online. To join access https://stockholmuniversity.zoom.us/j/65928545270 You will be able to enter the meeting room from 13:00. See below for other methods to participate. This week Aurore Betranhandy from Stockholm University will present Title: ”How can neutrinos treatment affect CCSNe explosions?” Abstract : "Core collapse supernovae, CCSNe are some of the most extreme events in our universe. Birthplace of neutron star and of most stellar mass black hole, their precise physics is however still uncertain. Observations give us precious insight on the final explosion but different central engines can birth similar CCSNe. Neutrinos are one of those messengers, however they do not only give us precious informations about the central engine, they also are a key mechanism of the actual explosion. As neutrinos are so important, we need to pay a close attention to their treatment in our simulations. Hence the tittle of this talk,"how can neutrinos treatment affect CCSNe explosions?". We will begin by briefly recap stellar evolution to continue with CCSNe mechanism and observations and end up with neutrino interactions and their impact on CCSNe physics." See you then! Andre da Silva Schneider is inviting you to a scheduled Zoom meeting. Topic: EO Meeting Time: Nov 5, 2020 01:00 PM Stockholm Every 2 weeks on Thu, 4 occurrence(s) Nov 5, 2020 01:00 PM Nov 19, 2020 01:00 PM Dec 3, 2020 01:00 PM Dec 17, 2020 01:00 PM Please download and import the following iCalendar (.ics) files to your calendar system. Weekly: https://stockholmuniversity.zoom.us/meeting/u5EkdeGtqj4oHdR8xLPfgh3x0S0IUQWMfTFX/ics?icsToken=98tyKu-tpzkiH9CQsh6HR_MMHYjoWe_wiCVBgqdvxAfJMyZUalDuZtESG4dOJ_XW Join Zoom Meeting https://stockholmuniversity.zoom.us/j/65928545270 Meeting ID: 659 2854 5270 One tap mobile +46850520017,,65928545270# Sweden +46850539728,,65928545270# Sweden Dial by your location +46 8 5052 0017 Sweden +46 850 539 728 Sweden +46 8 4468 2488 Sweden +46 8 5016 3827 Sweden +46 8 5050 0828 Sweden +46 8 5050 0829 Sweden Meeting ID: 659 2854 5270 Find your local number: https://stockholmuniversity.zoom.us/u/ccFBaMkcFb Join by SIP 65928545270 at 109.105.112.236 65928545270 at 109.105.112.235 Join by H.323 109.105.112.236 109.105.112.235 Meeting ID: 659 2854 5270 Join by Skype for Business https://stockholmuniversity.zoom.us/skype/65928545270 --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: From andre.schneider at astro.su.se Thu Dec 17 02:06:48 2020 From: andre.schneider at astro.su.se (Andre Schneider) Date: Thu, 17 Dec 2020 01:06:48 +0000 Subject: [Okc-wp4] EO meeting Thu Dec 17 @ 13:15 via Zoom In-Reply-To: <373b6b654a244f7cbeb2264c98820e00@astro.su.se> References: <373b6b654a244f7cbeb2264c98820e00@astro.su.se> Message-ID: <848312c8-c78a-4a27-9afc-1561c4c9ed00@email.android.com> Reminder of our last EO meeting of the year today at 13:15. On Dec 15, 2020 11:17, Andre Schneider wrote: Dear colleagues, our next EO meeting will take place this Thursday Dec 17 at 13:15 via Zoom. The meeting will be online. To join access https://stockholmuniversity.zoom.us/j/65928545270 You will be able to enter the meeting room from 13:00. See below for other methods to participate. This week Aurore Betranhandy from Stockholm University will present Title: ”How can neutrinos treatment affect CCSNe explosions?” Abstract : "Core collapse supernovae, CCSNe are some of the most extreme events in our universe. Birthplace of neutron star and of most stellar mass black hole, their precise physics is however still uncertain. Observations give us precious insight on the final explosion but different central engines can birth similar CCSNe. Neutrinos are one of those messengers, however they do not only give us precious informations about the central engine, they also are a key mechanism of the actual explosion. As neutrinos are so important, we need to pay a close attention to their treatment in our simulations. Hence the tittle of this talk,"how can neutrinos treatment affect CCSNe explosions?". We will begin by briefly recap stellar evolution to continue with CCSNe mechanism and observations and end up with neutrino interactions and their impact on CCSNe physics." See you then! Andre da Silva Schneider is inviting you to a scheduled Zoom meeting. Topic: EO Meeting Time: Nov 5, 2020 01:00 PM Stockholm Every 2 weeks on Thu, 4 occurrence(s) Nov 5, 2020 01:00 PM Nov 19, 2020 01:00 PM Dec 3, 2020 01:00 PM Dec 17, 2020 01:00 PM Please download and import the following iCalendar (.ics) files to your calendar system. Weekly: https://stockholmuniversity.zoom.us/meeting/u5EkdeGtqj4oHdR8xLPfgh3x0S0IUQWMfTFX/ics?icsToken=98tyKu-tpzkiH9CQsh6HR_MMHYjoWe_wiCVBgqdvxAfJMyZUalDuZtESG4dOJ_XW Join Zoom Meeting https://stockholmuniversity.zoom.us/j/65928545270 Meeting ID: 659 2854 5270 One tap mobile +46850520017,,65928545270# Sweden +46850539728,,65928545270# Sweden Dial by your location +46 8 5052 0017 Sweden +46 850 539 728 Sweden +46 8 4468 2488 Sweden +46 8 5016 3827 Sweden +46 8 5050 0828 Sweden +46 8 5050 0829 Sweden Meeting ID: 659 2854 5270 Find your local number: https://stockholmuniversity.zoom.us/u/ccFBaMkcFb Join by SIP 65928545270 at 109.105.112.236 65928545270 at 109.105.112.235 Join by H.323 109.105.112.236 109.105.112.235 Meeting ID: 659 2854 5270 Join by Skype for Business https://stockholmuniversity.zoom.us/skype/65928545270 --------------------------------- André da Silva Schneider Department of Astronomy Stockholm University -------------- next part -------------- An HTML attachment was scrubbed... URL: