GCN Circular 2598
Subject
GRB 040511: Optical limit
Event
Date
2004-05-14T10:51:44Z (22 years ago)
From
Kenzo Kinugasa at Gunma Astro. Obs/Japan <kinugasa@astron.pref.gunma.jp>
Kenzo Kinugasa (Gunma Astronomical Observatory),
Ken'ichi Torii (Osaka University), and Mitsuhiro Kohama (RIKEN),
report;
The SXC error region of GRB 040511 (HETE trigger #3218, GCN 2588)
was automatically observed with the GETS system
of the Gunma Astronomical Observatory, starting at 2004 May 11,
15:18:02 UT. The telescope is 25-cm Schmidt Cassegrain
equipped with unfiltered CCD camera (AP7p).
After co-adding a set of 15 frames of 30 sec exposures (mean
epoch 15:25:52 UT), we compared the image with the USNO A2.0
catalog. We found no new source brighter than R=15 mag in the
SXC error region. Also, an upper limit of R=15.1 mag is
obtained for the afterglow candidate (Fox, et al. GCN 2597).