GCN Circular 6441
Subject
GRB 070520A: Subaru Observations
Event
Date
2007-05-21T16:14:41Z (19 years ago)
From
Nobuyuki Kawai at Tokyo Tech <nkawai@hp.phys.titech.ac.jp>
T. Hattori, K. Aoki (Subaru Telescope, NAOJ), and N. Kawai
(Tokyo Tech) report on behalf of the Subaru GRB team:
"We observed the field of GRB 070520A (Romano et al., GCN 6423) with
FOCAS on the Subaru Telescope in the z'-band from 06:32(UT) to
07:27(UT) May 21 with a total exposure of 1920 sec (120s*16) under a
non-photometric condition with occasional clouds.
In the XRT error circle (Romano et al., GCN 6427), we find a possible
afterglow candidate as a low-significance source (1.5 sigma) at
RA=12:53:26.52, Dec=74:59:26.6
with a positional uncertainty of 0.4", and a rough estimation of the
magnitude z' ~ 24.
The image may be viewed at
http://www.hp.phys.titech.ac.jp/nkawai/grb/070520A/ "