GCN Circular 31203
Subject
GRB 211211A: KAIT Optical Afterglow Candidate
Date
2021-12-11T14:37:08Z (2 years ago)
From
Weikang Zheng at UC Berkeley <weikang@berkeley.edu>
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 Swift GRB 211211A (Trigger 1088940)
starting at Dec. 11, 13:46:25 UT. We detected an uncataloged
optical afterglow candidate at position (error ~0.5"):
RA: 14:09:10.09 (J2000)
Dec: +27:53:18.23 (J2000)
We estimate the clear band magnitude ~20.3 in out clear band image
at ~0.63 hours after burst. We can not estimate the variability
at this time, further observations are encouraged.
We also notice the afterglow candidate location is very close to a
SDSS galaxy (SDSS ID: 1237665429707096375, with r = 19.53 mag),
it is unclear if the galaxy is related to the GRB.