GCN Circular 6987
Subject
GRB 071025: ROTSE-III Detection of Optical Counterpart
Date
2007-10-25T04:37:51Z (17 years ago)
From
Eli Rykoff at U of Michigan/ROTSE <erykoff@umich.edu>
E.S. Rykoff (UCSB), F. Yuan (U Mich), B. E. Schaefer (Louisiana State),
H. Swan (U Mich), R. Quimby (Caltech), report on behalf of the ROTSE
collaboration:
ROTSE-IIIb, located at McDonald Observatory, Texas, responded to GRB
071025 (Swift trigger 295301, GCN 6986). The first image was at
04:10:14.0 UT, 80.3 s after the burst (6.0 s after the GCN notice time).
The unfiltered images are calibrated relative to USNO A2.0. We detect a
19.2 magnitude, fading source with coordinates:
23:40:17.19 +31:46:42.64 (J2000), with positional
uncertainty of 1" or better
start UT mag mlim(of image)
----------------------------------
04:16:27.1 19.2 18.6
This source is not visible in DSS (second epoch), 2MASS or the MPChecker
database.
A jpeg image is available at
http://www.rotse.net/images/gsb295301_3b021-030_key.jpg
Continuing observations are in progress.
