GCN Circular 4557
Subject
GRB 060121: Infrared Observations
Event
Date
2006-01-22T06:54:35Z (20 years ago)
From
Josh Bloom at UC Berkeley <jbloom@astron.berkeley.edu>
J. S. Bloom, K. Alatalo (UC Berkeley) report on behalf of a larger
collaboration:
"We observed the field of GRB 060121 (Arimoto et al., GCN 4550;
Prigozhin et al. GCN 4551) with the 1.3 meter Peters Automated
Infrared Imaging Telescope (PAIRITEL) on Mt. Hopkins, Arizona,
beginning at 2006-01-22 04:43:15 UT. In a stack of the first 345
seconds of integration, we find no new objects in the HETE-SXC error
circle in JHKs bands brighter than the 2MASS detection levels. All
significantly detected sources fainter than 2MASS have optically pre-
imaged counterparts from SDSS (Cool et al. GCN 4554). Our approximate
10 sigma detection levels are J=18.7, H=17.6, Ks=16.6 mag,
respectively."
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