GCN Circular 12017
Subject
Radio observations of GRB 110428A with the EVLA
Date
2011-05-19T19:33:20Z (13 years ago)
From
Poonam Chandra at Royal Mil. College Canada <Poonam.Chandra@rmc.ca>
"Poonam Chandra (RMC), Dale A. Frail (NRAO), S. Bradley Cenko
(Berkeley), Fiona Harrison (Caltech) and Srinivas Kulkarni (Caltech)
report:
We observed the Fermi burst GRB 110428A (Vasileiou et al. GCN 11982)
with the Expanded
Very Large Array (EVLA) at various radio frequencies between April 30
and May 13. We did not detect any significant radio source within the
7.1" error circle of source 2 (Melandri et al. GCN 11984). Below are the
details and 3-sigma upper limits from our observations:
Epoch Frequency 3-sigma upper limit
Apr 30.45 UT 4.5 GHz 93
uJy
Apr 30.45 UT 7.9 GHz 66
uJy
May 3.50 UT 4.5 GHz 66
uJy
May 3.50 UT 7.9 GHz 54
uJy
May 6.74 UT 4.5 GHz 87
uJy
May 6.74 UT 7.9 GHz 60
uJy
May 10.48 UT 22.45 GHz 240
uJy
May 13.41 UT 8.33 GHz 35
uJy
We thank the EVLA staff for scheduling our observations so promptly. The
National Radio Astronomy Observatory is a facility of the National
Science Foundation operated under cooperative agreement by Associated
Universities, Inc."