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<span style="font-size: 14px;" class="">Hi All,</span>
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<div class=""><span style="font-size: 14px;" class="">Here is a reminder for our PhD seminar today!</span></div>
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<div class="" style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);"><span class="" style="font-size: 14px;">Join Zoom Meeting</span></div>
<div class="" style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);"><span class="" style="font-size: 14px;"><a href="https://stockholmuniversity.zoom.us/j/65499466134" class="">https://stockholmuniversity.zoom.us/j/65499466134</a></span></div>
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<div class=""><span style="font-size: 14px;" class="">Best wishes,</span></div>
<div class=""><span style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-size: 14px;" class="">Matthias & Janet</span></div>
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<div class=""><span style="font-size: 14px;" class="">On 8 Mar 2021, at 13:23, Janet Ting-Wan Chen <<a href="mailto:janet.chen@astro.su.se" class="">janet.chen@astro.su.se</a>> wrote:</span></div>
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<div class=""><span class="" style="font-size: 14px;">Dear all,</span></div>
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<div class=""><span class="" style="font-size: 14px;">On Friday March 12 at 10:30, we will have the PhD Seminar, remotely via zoom.</span></div>
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<div class=""><span class="" style="font-size: 14px;">Our speaker is Davide Gizzi from the Stockholm University. </span></div>
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<div class=""><span class="" style="font-size: 14px;">Title: Neutrino-driven winds in binary neutron star mergers</span></div>
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<div class=""><span class="" style="font-size: 14px;">Abstract: Neutrinos are produced in copious amounts in the hot environment of a Binary Neutron Star Merger (BNSM). Although being the main source of cooling, neutrinos get scattered and absorbed while leaking
out the post-merger system because of the large matter densities. If matter in the decoupling region gets enough momentum by neutrino absorption to overcome the gravitational well of the central merger remnant, neutrinos are able to power mass ejection called
neutrino-driven winds. At the same time, neutrino absorption on nucleons affects the ejecta composition by changing the amount of neutrons. Since the neutron richness in the ejecta sets the strength of the r-process nucleosynthesis and the matter opacity,
the macronova signal arising from the decay of the unstable r-process nuclei in the wind carries the signature of weak interactions in mergers as it shines in the optical wavelength band. </span></div>
<div class=""><span class="" style="font-size: 14px;">The detection of the blue macronova following the event GW170817 was a clear observational signature of weak interactions in BNSMs. However, other mass ejection channels beside neutrino-driven winds have
been shown to potentially contribute to this optical counterpart of the macronova. In addition, relativistic jets launched from the central engine and drilling through the ejecta have been shown to impact the macronova signal, complicating our understanding
of the diversity of macronova light curves. Looking forward to future, new macronova detections, it is therefore important to systematically study neutrino-driven wind contribution to macronova light curves for different total masses, mass ratios of the binary
and Equation of States (EoSs), as well as accounting for jet-wind interplays for different jet properties.</span></div>
<div class=""><span class="" style="font-size: 14px;">For this purpose, I am going to talk about the implementation of an inexpensive, efficient approximation to the neutrino transport called Advanced Spectral Leakage (ASL). This scheme can be coupled to Lagrangian
hydrodynamics with the Smoothed-Particle Hydrodynamics (SPH) approach to provide neutrino-driven wind profiles from dynamical simulations of BNSMs. In this way, it will be possible to systematically extract the associated macronova light curves and characterize
their diversity.</span></div>
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<div class=""><span class="" style="font-size: 14px;"><a href="https://www.albanova.se/event/davide_gizzi/" class="">https://www.albanova.se/event/davide_gizzi/</a></span></div>
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<div class=""><span class="" style="font-size: 14px;">We will have the colloquium using zoom. You will find the invitation at the end of this email.</span></div>
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<div class=""><span class="" style="font-size: 14px;">Some guidelines:</span></div>
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<div class=""><span class="" style="font-size: 14px;">1) Join the session with your microphone muted.</span></div>
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<div class=""><span class="" style="font-size: 14px;">2) When you have a question, press the “raise hand button” and wait till you are asked to ask your question. </span></div>
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<div class=""><span class="" style="font-size: 14px;">3) The session will be online from 10:20, please join at least a few minutes early as we would like to start 10:30 sharp.</span></div>
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<div class=""><span class="" style="font-size: 14px;">We hope to see all of you there!</span></div>
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<div class=""><span class="" style="font-size: 14px;">Matthias & Janet</span></div>
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</span></div>
<div class=""><span class="" style="font-size: 14px;">Upcoming events: </span></div>
<div class=""><span class="" style="font-size: 14px;">19/03: Sylvia Plöckinger (Leiden)</span></div>
<div class=""><span class="" style="font-size: 14px;">26/03: Matthew Kenworthy (Leiden)</span></div>
<div class=""><span class="" style="font-size: 14px;">02/04: Good friday</span></div>
<div class=""><span class="" style="font-size: 14px;">===================================================</span></div>
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<div class=""><span class="" style="font-size: 14px;">Janet Ting-Wan Chen is inviting you to a scheduled Zoom meeting.</span></div>
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<div class=""><span class="" style="font-size: 14px;">Topic: Astronomy Seminar Davide Gizzi</span></div>
<div class=""><span class="" style="font-size: 14px;">Time: Mar 12, 2021 10:30 AM Stockholm</span></div>
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<div class=""><span class="" style="font-size: 14px;">Join Zoom Meeting</span></div>
<div class=""><span class="" style="font-size: 14px;"><a href="https://stockholmuniversity.zoom.us/j/65499466134" class="">https://stockholmuniversity.zoom.us/j/65499466134</a></span></div>
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<div class=""><span class="" style="font-size: 14px;">Meeting ID: 654 9946 6134</span></div>
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<div class=""><span class="" style="font-size: 14px;">Meeting ID: 654 9946 6134</span></div>
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