GCN Circular 37277
Subject
GRB 240825A: AKO Optical Afterglow Detection
Date
2024-08-25T17:37:42Z (22 days ago)
From
Mohammad Odeh at Al Khatim Observatory M44 <mshodeh@gmail.com>
Via
legacy email
Mohammad Odeh (Al-Khatim Observatory, AKO, operated by the International
Astronomical Center in Abu Dhabi, UAE), and Nidhal Guessoum (American
University of Sharjah, UAE), report:
We observed the field of GRB 240825A detected by Fermi (Fermi GBM team, GCN
37273) and Swift (Gupta et al., GCN 37274), with our 0.36m f/7.7 robotic
telescope. The observation started on 25 August 2024 at 16:48 (UT), 55
minutes from the trigger.
We obtained multiple 180-sec exposures in Ic filter. We clearly detected the
optical afterglow at:
R.A. (J2000): 22:58:17.3
Dec. (J2000): +01:01:36.4
Our detection is consistent with the results of (Jiang et al., GCN 37275;
and Dutton et al., GCN 37276).
The following observation was calculated using Atlas catalogue as a
reference:
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ObsTime (mid), Exposure (sec), Filter, Mag
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2024-08-25T17:08:55Z, 13 x 180s (stacked), Ic, 17.6 +/- 0.16
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The magnitude is not corrected for galactic extinction.