GCN Circular 5824
Subject
GRB 061121: ROTSE-III Confirmation of Optical Counterpart
Date
2006-11-21T15:46:55Z (17 years ago)
From
Sarah Yost at U.Michigan <sayost@umich.edu>
S.A. Yost (U Mich), B. E. Schaefer (Louisiana State), F. Yuan (U Mich),
report on behalf of the ROTSE collaboration:
ROTSE-IIIa, located at Siding Spring Observatory, Australia, responded
to GRB 061121 (Swift trigger 239899). The first image was at 15:22:49.6
UT, 20.6 s after the burst (7.6 s after the GCN notice time). The
unfiltered images are calibrated relative to USNO A2.0. We detect a 14.9
magnitude, fading source with coordinates:
09:48:54.4 -13:11:42.2 (J2000), with positional
uncertainty of 1" or better.
This is coincident with the UVOT source (GCN 5823)
start UT mag mlim(of image)
----------------------------------
15:23:46.2 14.9 14.9
A jpeg image is available at
http://www.rotse.net/images/gsb239899_3a02_img.jpg Note that the object
marked 65 is the candidate in question.
Continuing observations are in progress.
