GCN Circular 38216
Subject
GRB 241113A: KAIT optical observations
Event
Date
2024-11-14T09:14:38Z (a year ago)
From
Weikang Zheng at UC Berkeley <weikang@berkeley.edu>
Via
email
WeiKang Zheng and Alexei V. Filippenko (UC Berkeley) report on
behalf of the KAIT GRB team:
The 0.76-m Katzman Automatic Imaging Telescope (KAIT), located
at Lick Observatory, responded to GRB 241113A detected by Swift
(Siegel et al., GCN 38194) starting at 08:03:11 UT, 898s after
the bust under cloudy conditions. Observations were performed
in the clear (roughly R) filter, and a set of 20s, 40s and 60s
exposure images were obtained. The optical afterglow (Siegel
et al., GCN 38194; Francile et al., GCN 38195; Ferrer et al.,
GCN 38197; Izzo et al., GCN 38201; Ferro et al., GCN 38206;
Breeveld et al., GCN 38207) was barely detected in individual
image due to cloudy weather. However, the optical afterglow
was detected in the coadd images. We measure the following
magnitude calibrated to PS1 catalog:
tmid-t0(s) exp mag err
961 5x20s 17.9 +/- 0.2
1119 5x20s 18.1 +/- 0.2
1419 9x40s 18.5 +/- 0.3
2293 16x60s 19.0 +/- 0.3