GCN Circular 34910
Subject
GRB 231024A: AKO Optical Counterpart Candidate
Date
2023-10-30T12:04:57Z (a year 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 Dalya Akl, Ilmah Abdi, and
Nidhal Guessoum (American University of Sharjah, UAE), report:
We observed the field of GRB 231024A (Fermi GBM Team, GCN 34876; Gompertz
et al., GCN 34878; Iglesias-López et al., GCN 34881; Saccardi et al., GCN
34882; Scotton et. al., GCN 34885) with our 0.36m f/7.7 robotic telescope.
The observation was done on 29 October 2023 from 17:31 UT to 19:14 UT, 5.21
days after the trigger. We obtained 32x180 sec. images using (Ic) filter.
We detected the optical afterglow candidate of GRB 231024A in our stacked
images at the coordinates (J2000.0): R.A.: 00:55:07.28, Dec.: -15:15:19.6,
which is consistent with the observation of (Gompertz et al., GCN 34878).
The following magnitude was calculated using the Atlas catalogue as a
reference:
-----------------------------------------------------------------------------
ObsTime (mid), Exposure (sec), Filter, Mag, MagRMS
-----------------------------------------------------------------------------
2023-10-29T18:24:01Z, 32x180s (stacked), Ic, 18.3, 0.16
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The magnitude is not corrected for galactic extinction.