GCN Circular 41298
Subject
EP-WXT trigger 01709195487: KAIT confirmation of the stellar flare
Date
2025-08-08T21:07:33Z (22 days ago)
From
Weikang Zheng at UC Berkeley <weikang@berkeley.edu>
Via
email
WeiKang Zheng (UCB), Xuhui Han (NAOC), Pinpin Zhang (NAOC) and
Alexei V. Filippenko (UCB) report on behalf of the KAIT GRB team:
The 0.76-m Katzman Automatic Imaging Telescope (KAIT), located at
Lick Observatory, automatically responded to the EP-WXT trigger
01709195487 (Liang et al., GCN 41173) starting at 07:40:52 UT,
July 27th, 408 seconds after the trigger. A set of images
in clear (roughly R) filters were obtained. Observations lasted
for about 1.4 hours. The high proper motion star UPM J1905-2819
reported by Liang et al. (GCN 41173) was measured to be 10.86 +/-
0.02 mag at the beginning and decayed to be 11.07 +/- 0.02 mag at
1.4 hours later. The target was observed again in the following
two nights with a measured magnitude of 11.16 +/- 0.02, confirming
the EP X-ray trigger due to a stellar flare as also reported by
Perez-Garcia et al. (GCN 41192).