[OKC-CosmologyGravity] [OKC C&G] Zoom talk NOW 10 am (note unusual time)

[Keir Rogers]

Meeting starting now!



Keir Rogers is inviting you to a scheduled Zoom meeting.


Topic: OKC C&G

Time: Apr 8, 2020 10:00 AM Stockholm


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Meeting ID: 217 997 433


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________________________________
From: Okc-wp1-at-fysik.su.se <okc-wp1-at-fysik.su.se-bounces at lists.su.se> on behalf of Keir Rogers <keir.rogers at fysik.su.se>
Sent: Tuesday, April 7, 2020 4:45 PM
To: okc-wp1-at-fysik.su.se at lists.su.se
Subject: [OKC-CosmologyGravity] [OKC C&G] Zoom talk tomorrow 10 am (note unusual time)


Dear all,


This is a reminder for our OKC Cosmology & Gravity meeting tomorrow at 10 am (note unusual time) - details and the Zoom link are below.


Best,


C&G organisers


________________________________
From: Okc-wp1-at-fysik.su.se <okc-wp1-at-fysik.su.se-bounces at lists.su.se> on behalf of Keir Rogers <keir.rogers at fysik.su.se>
Sent: Friday, April 3, 2020 6:12 PM
To: okc-wp1-at-fysik.su.se at lists.su.se
Subject: [OKC-CosmologyGravity] [OKC C&G] Zoom talk Wed 8 Apr 10 am (note unusual time)


Dear all,


We hope you can join us on Zoom (see link below) for next Wednesday's OKC Cosmology & Gravity meeting at 10 am (note unusual time), where Nikhel Gupta at the University of Melbourne will present:


Mass Estimation of Galaxy Clusters with Deep Learning I: Sunyaev-Zel’dovich Effect (https://arxiv.org/pdf/2003.06135.pdf)We present a new application of deep learning to infer the masses of galaxy clusters directly from images of the microwave sky. Effectively, this is a novel approach to determining the scaling relation between a cluster’s Sunyaev-Zel’dovich (SZ) effect signal and mass. The deep learning algorithm used is mResUNet, which is a modified feed-forward deep learning algorithm that broadly combines residual learning, convolution layers with different dilation rates, image regression activation and a U-Net framework. We train and test the deep learning model using simulated images of the microwave sky that include signals from the cosmic microwave background (CMB), dusty and radio galaxies, instrumental noise as well as the cluster’s own SZ signal. The simulated cluster sample covers the mass range 1×10^14 M⊙ < M200c < 8×10^14 M⊙ at z = 0.7. The trained model estimates the cluster masses with a 1σ uncertainty ∆M/M ≤ 0.2, consistent with the input scatter on the SZ signal of 20%. We verify that the model works for realistic SZ profiles even when trained on azimuthally symmetric SZ profiles by using the Magneticum hydrodynamical simulations. We find the model returns unbiased mass estimates for the hydrodynamical simulations with a scatter consistent with the SZ-mass scatter in the light cones.



Keir Rogers is inviting you to a scheduled Zoom meeting.


Topic: OKC C&G

Time: Apr 8, 2020 10:00 AM Stockholm


Join Zoom Meeting

https://stockholmuniversity.zoom.us/j/217997433


Meeting ID: 217 997 433


One tap mobile

+46850500829,,217997433# Sweden

+46850520017,,217997433# 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

        +1 669 900 6833 US (San Jose)

        +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)

        +61 2 8015 6011 Australia

        +61 3 7018 2005 Australia

        +61 8 7150 1149 Australia

Meeting ID: 217 997 433

Find your local number: https://stockholmuniversity.zoom.us/u/cd8oxTpk4z


Join by SIP

217997433 at 109.105.112.236

217997433 at 109.105.112.235


Join by H.323

109.105.112.236

109.105.112.235

Meeting ID: 217 997 433


Join by Skype for Business

https://stockholmuniversity.zoom.us/skype/217997433



Hope you will be able to join!


Best,


C&G organisers

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