GCN Circular 39087
Subject
The EP-WXT trigger 01709131085: KAIT confirmation of the stellar flare
Date
2025-01-29T20:04:00Z (a year 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
(ID= 01709131085; Li et al., GCN 39068) starting at 05:09 UT,
Jan. 29th, ~20 minutes after the trigger. A set of images with 20s
exposure time were obtained in B, V, R I and clear (roughly R)
filters. Observations lasted for about 3 hours. The high proper
motion star RX J0448.7+1003 reported by Li et al. (GCN 39068) was
covered by KAIT images. Photometry of the star show that its
brightness is at B~13.2 mag in our first B band image at 26.7
minutes, increased to a peak of B~12.9 mag at 43.6 minutes, then
decreased afterward with B~13.6 mag at 187 minutes. We therefore
confirm that this EP-WXT trigger event is truly associated with
this stellar flare.