GCN Circular 37213
Subject
GRB 240819A: KAIT optical upper limit
Date
2024-08-21T02:16:36Z (4 months ago)
Edited On
2024-08-21T16:20:35Z (4 months ago)
From
Weikang Zheng at UC Berkeley <weikang@berkeley.edu>
Edited By
Vidushi Sharma at NASA GSFC/UMBC <vidushi.sharma@nasa.gov> on behalf of Weikang Zheng at UC Berkeley <weikang@berkeley.edu>
Via
legacy email
WeiKang Zheng, Alexei V. Filippenko (UCB) and S. Antier (OCA),
SVOM JSWG: Jian-Yan Wei (NAOC, China), Bertrand Cordier (CEA, F),
Shuang-Nan Zhang (IHEP, CN), Stephane Basa (LAM, F), Jean-Luc Attéia
(IRAP, F), Arnaud Claret (CEA, F), Zi-Gao Dai (USTC, CN), Frederic Daigne
(IAP, F), Jin-Song Deng (NAOC, CN), Andrea Goldwurm (APC, F),
Diego Götz (CEA, F), Xu-Hui Han (NAOC, CN), Cyril Lachaud (APC, F),
En-Wei Liang (GXU, CN), Yu-Lei Qiu (NAOC, CN), Susanna Vergani
(Obs. Paris, F), Jing Wang (NAOC, CN), Chao Wu (NAOC, CN), Li-Ping Xin
(NAOC, CN), Bing Zhang (UNLV, CN)
report on behalf of the KAIT GRB team:
The 0.76-m Katzman Automatic Imaging Telescope (KAIT), located at
Lick Observatory, responded to GRB 240819A from the SVOM/ECLAIRs
trigger sb24081901 (Coleiro et al., GCN 37208) starting at 03:49
UT, Aug 19th, ~1.23 hours after the trigger. Observations were
performed in 3x3 tiling mode and lasted for about 6 hours, a set
of clear (roughly R) filter images were obtained. The location of
the 4 X-ray sources, two from Swift XRT (Evans et al., GCN 37203)
and two additional ones from EP/FXT (Li et al., GCN 37206) were all
covered in our images. Preliminary analysis do not reveal any new
optical counterpart candidate within the X-ray error circles,
neither in single image, nor in the co-add images, consistent with
the reports from Jiang et al. (GCN 37207). The typical limiting
magnitude of our single clear image is about 19.5 mag calibrated to
the Pan-STARRS1 catalog.