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.
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