GCN Circular 39097
Subject
GRB 250129A: AKO Optical Afterglow Detection
Date
2025-01-30T11:41:15Z (6 days ago)
From
Mohammad Odeh at Al Khatim Observatory M44 <mshodeh@gmail.com>
Via
email
Mohammad Odeh (Al-Khatim Observatory, AKO, operated by the International
Astronomical Center in Abu Dhabi, UAE), and Shaikha Alshamsi, Nuha Manal
Pattani, and Nidhal Guessoum (American University of Sharjah, UAE), report:
We observed the field of GRB 250129A (Beardmore et al., GCN 39066) using our
0.36m f/7.7 robotic telescope. The observation session began on 29 January
2025 at 21:07 UT and continued until 22:02 UT, with a midpoint at 21:36 UT,
approximately 16.8 hours after the trigger.
We obtained multiple 180-second exposures using the Ic filter. The optical
afterglow was clearly detected at:
R.A. (J2000): 13:14:42.40
Dec. (J2000): +05:01:50.4
Our detection is consistent with the results of Francile et al., GCN 39065;
Beardmore et al., GCN 39066; Schneider et al., GCN 39071; Belkin et al., GCN
39072; Izzo et al., GCN 39073; Izzo & Malesani, GCN 39074; Ghosh et al., GCN
39077; Schneider et al., GCN 39078; Brivio et al., GCN 39079; Siegel et al.,
GCN 39085; Zheng et al., GCN 39090; Schlekat et al., GCN 39091; Antier et
al., GCN 39096.
The following observation was calculated using the Atlas catalogue as a
reference:
----------------------------------------------------------------------------
-
ObsTime (mid), Exposure (sec), Filter, Mag
----------------------------------------------------------------------------
-
2025-01-29T21:35:48Z, 18 x 180s (stacked), Ic, 18.7 +/- 0.22
----------------------------------------------------------------------------
-
The magnitude is not corrected for galactic extinction.