Optical afterglow of GRB 221009A
Taken by Filipp Romanov (Филипп Романов) on October 10, 2022 @
Remotely at Burke-Gaffney Observatory (Halifax, Canada) and iTelescope.Net T24, Auberry, USA
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Details:
I observed the optical afterglow of the extremely bright GRB 221009A (Swift J1913.1+1946) using remote 0.61-m f/6.5 telescopes (with Cousins Ic photometric filters): of Burke-Gaffney Observatory (in Halifax, Canada) and iTelescope.Net T24 in Sierra Remote Observatory (Auberry, California, USA) - from October 10 to October 13, 2022. //// Due to the fact that telescopes and filters are the same, I made a comparative animation of the fading of the optical afterglow of this unique gamma-ray burst. //// I estimated the brightness in the first image: 15.65 Ic https://gcn.gsfc.nasa.gov/gcn3/32664.gcn3 , in the second: 17.1 Ic https://gcn.gsfc.nasa.gov/gcn3/32679.gcn3 //// I have a lot of experience observing these phenomena, and I was involved in the creation of a manual for amateur observations of optical afterglows of gamma-ray bursts, and this was recently published https://www.aavso.org/sites/default/files/Time_Domain_Astrophysics.pdf on the AAVSO website. //// With best regards, Filipp Romanov, AAVSO member.
Photographer's website:
https://twitter.com/romanov_filipp
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