GCN Circular 9481
Subject
GRB 090531b, SMARTS optical/IR observations
Date
2009-06-02T21:50:32Z (15 years ago)
From
Bethany Cobb at UC Berkeley <bcobb@astro.berkeley.edu>
B. E. Cobb (UC Berkeley) reports:
Using the ANDICAM instrument on the 1.3m telescope at CTIO, we obtained
optical/IR imaging of the error region of GRB 090531b (GCN 9461, Cummings
et al.) over two epochs with mid-exposure times of 2009-06-01 02:56 UT
and 2009-06-02 05:26 UT (8.3 and 34.8 hours post-burst). Total summed
exposure times for each observation amounted to 36 minutes in R and
30 minutes in J.
While there are a number of sources in and around the position of
the GRB X-ray afterglow (GCN 9463