GCN Circular 43609
Subject
GRB 260131A: KAIT optical observations
Event
Date
2026-02-03T07:55:33Z (8 days ago)
From
Weikang Zheng at UC Berkeley <weikang@berkeley.edu>
Via
email
WeiKang Zheng (UCB) and Alexei V. Filippenko (UCB) report on
behalf of the KAIT GRB team:
The 0.76-m Katzman Automatic Imaging Telescope (KAIT), located at
Lick Observatory, observed the field of GRB 260131A (Fermi GBM
Team, GCN 43579; Sugai et al., GCN 43580; Roberts et al., GCN 43585;
Frederiks et al., GCN 43590; Luo et al., GCN 43591; Li et al.,
GCN 43605) at ~0.914d and again at ~1.875d after the burst. A set
of clear (roughly R) filter images were obtained. We detected the
optical afterglow (Gompertz et al., GCN 43586; Lee et al., GCN 43587;
Saccardi et al., GCN 43595; García García et al., GCN 43599,
Shi et al. GCN 43601, Jayaraman et al., GCN 43606; Zhu et al.,
GCN 43607) in our coadd images and estimate the afterglow to be
17.8 +/- 0.1 and 19.2 +/- 0.2 mag (Vega) respectively.