TITLE:   GCN CIRCULAR
NUMBER:  38232
SUBJECT: GRB 241113B: KAIT Optical Afterglow Candidate
DATE:    24/11/15 08:40:03 GMT
FROM:    Weikang Zheng at UC Berkeley <weikang@berkeley.edu>

WeiKang Zheng and Alexei V. Filippenko (UCB),


SVOM JSWG: Jian-Yan Wei (NAOC), Bertrand Cordier (CEA), Shuang-Nan Zhang
(IHEP), Stéphane Basa (LAM), Arnaud Claret (CEA), Zi-Gao Dai (USTC),
Frédéric Daigne (IAP), Jin-Song Deng (NAOC), Olivier Godet (IRAP),  Andrea
Goldwurm (APC), Diego Götz (CEA), Xu-Hui Han (NAOC), Cyril Lachaud (APC),
En-Wei Liang (GXU), Yu-Lei Qiu (NAOC), Susanna Vergani (Obs.Paris), Jing
Wang (NAOC), Chao Wu (NAOC), Li-Ping Xin (NAOC),  Shao-Lin Xiong (IHEP),
Bing Zhang  (UNLV)


report on behalf of the KAIT GRB team:


The 0.76-m Katzman Automatic Imaging Telescope (KAIT), located at Lick
Observatory, automatically responded to GRB 241113B (SVOM/ECLAIRs, Dagoneau
et al., GCN 38196; SVOM/GRM, Liu et al., GCN 38212; EP/WXT, Liu et al., GCN
38214) starting at 11:24:48 UT, 103s after ECLAIRs trigger. Observations
were performed in 3x3 tiling mode and lasted for about 2 hours, a set of
clear (roughly R) filter images were obtained. We detected a bright
uncataloged optical afterglow candidate at J2000 position of (error ~0.5"):

RA:  07:20:57.72

Dec: +46:47:12.3

Its brightness decayed from 16.7 mag at ~250s to 20.5 mag (Vega) at ~1.37
hours, we therefor suggest this to be the optical afterglow of GRB 241113B.

~