GCN Circular 6953
Subject
GRB 071020A: IR Imaging with PAIRITEL
Event
Date
2007-10-20T16:20:34Z (18 years ago)
From
Josh Bloom at UC Berkeley <jbloom@astron.berkeley.edu>
J. S. Bloom, D. A. Perley (UC Berkeley) and D. L. Starr (UC Berkeley,
LCOGT) report:
"We observed the field of the optical transient (Schaefer et al. GCN
6948) of GRB 071020A (Holland et al. GCN 6949) with the 1.3m PAIRITEL
on Mt. Hopkins starting at 2007-10-20 09:18 UT (~2h16m after the GRB,
once the field was within telescope limits). In a stack of 2190 sec
total integration time (mean time = 2007-10-20 09:46 UT), we detect
the source in the J-band at position:
ra= 07:58:39.78 dec = +32:51:40.4
(J2000; rms uncertainty relative to 2MASS of 250 mas in each
coordinate) with J=19.06 +/- 0.23 mag and H=18.71 +/- 0.30 (only
marginally detected). The source appears to have faded in subsequent
imaging."
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