[vsnet-grb-info 9580] GRB 100805A: P60 Optical Afterglow Candidate
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Thu Aug 5 14:00:05 JST 2010
TITLE: GCN CIRCULAR
NUMBER: 11050
SUBJECT: GRB 100805A: P60 Optical Afterglow Candidate
DATE: 10/08/05 04:59:00 GMT
FROM: S. Bradley Cenko at Caltech <cenko at srl.caltech.edu>
S. B. Cenko (UC Berkeley) reports on behalf of a larger collaboration:
We have imaged the field of GRB 100805A (Swift trigger #430957) with the
robotic Palomar 60 inch telescope. Images were obtained in the Sloan r',
i', and z' filters beginning at 04:15 UT on 5 August (~ 3 minutes after
the Swift trigger time).
At the edge of the XRT error circle we detect a bright point source not
present in the Digital Sky Survey imaging of the field at coordinates
(J2000.0):
RA: 19:59:30.53 Dec: +52:37:40.0
Calibrating with respect to the USNO-B1 catalog, we measure a preliminary
magnitude or R = 17.3.
Observations to confirm the transient nature of this source are ongoing.
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