[vsnet-grb-info 12560] GRB 121028A: RAPTOR Limits During Gamma-Ray Emitting Interval

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  13924
SUBJECT: GRB 121028A: RAPTOR Limits During Gamma-Ray Emitting Interval
DATE:    12/10/29 16:05:04 GMT
FROM:    James Wren at LANL  <jwren at nis.lanl.gov>

J. Wren, W.T. Vestrand, P. Wozniak, and H. Davis,
of Los Alamos National Laboratory report:

The RAPTOR network of robotic optical telescopes made observations of Swift
trigger 536897 (Starling, et al., GCN 13913).  The burst location was within
the field of our wide-field monitor located in Maui, HI, which began a 10 s
integration of the location at 05:04:32.5 UT, 0.6 s after the Swift trigger
time and during the gamma-ray emitting interval including the time of peak
emission detected by the BAT (Sakamoto, et al., GCN 13917).  We detect no
new object at the location of the refined Swift XRT location (Evans, et al.,
GCN 13918).  Our 3-sigma limiting magnitude is 10.0 based on a comparison of
our unfiltered image to the Tycho-2 V-band catalog.