IAU Division D - High energy phenomena and fundamental physics - Webinar series: EHT Imaging of Sagittarius A*

  • Date sent: 5 July 2022, 00:01
  • From: Nanda Rea <no-reply@iau.org>
  • To: Division D High Energy Phenomena and Fundamental Physics (2643 recipients)
  • Reply-To: rea@ice.csic.es
  • Subject: IAU Division D - High energy phenomena and fundamental physics - Webinar series: EHT Imaging of Sagittarius A*
Dear Div-D members,
 
The IAU Div-D steering committee is pleased to announce the first of a series of webinars devoted to new scientific results that are of interest for our division. Our first invited speaker will be Geoffrey Bower from the Academia Sinica Institute of Astronomy and Astrophysics, and Project Scientist of the EHT Collaboration.

Title: Event Horizon Telescope Imaging of Sagittarius A*

 

Abstract: I will present the first image of the Galactic Center black hole, Sgr A*, obtained with the Event Horizon Telescope.  The image has a ring-like morphology consistent with predictions of general relativity and the Kerr metric.  Comparison with an unprecedented library of GRMHD simulations places strong constraints on the accretion and outflow properties.  The result confirms that the gravitational lensing feature observed first in M87 is a universal property of black holes, establishes the consistency of general relativity over three orders of magnitude in mass, and opens the door for future tests of gravitational physics, accretion, and jet formation. 

 

Date and Time: Thursday, July 21st at 16:00 UTC.

 

Zoom link:

Meeting ID: 833 9241 8285
Passcode: 315912
Join by SIP
 
Hope to see you numerous to listen to this exciting result!
 
 

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If you wish to share with IAU Division D any information about matters that may be relevant to the activities of Div D Members, please send an e-mail to rea@ice.csic.es . Thank you in advance for your inputs, and best regards.

Dr. Nanda Rea, acting Scientific Secretary of IAU Division D Steering Committee

Institute of Space Sciences (ICE-CSIC, IEEC; Barcelona, Spain)

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