GCN Circular 37191
Subject
EP240816b: KAIT optical upper limit
Date
2024-08-16T17:14:11Z (4 months ago)
From
Weikang Zheng at UC Berkeley <weikang@berkeley.edu>
Via
legacy 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, responded to the fast X-ray transient EP240816b
from the Einstein Probe (Yang et al. GCN 37185) starting at 07:42
UT, Aug 16th, ~6.0 hours after the trigger. A set of 30x60s images
were obtained in the clear (roughly R) filters. Preliminary analysis
do not reveal any new optical counterpart candidate within the 10
arcsec radius EP-FXT error box (Yang et al. GCN 37185), neither in
single image, nor in the co-add images, consistent with the reports
from An et al. (GCN 37186) and Lipunov et al. (GCN 37187). The
typical limiting magnitude of our single clear image is about 19.5
mag, and about 20.5 mag in the co-add image.