GCN Circular 14018
Subject
GRB 121128A: WSRT radio observation
Date
2012-11-28T23:16:59Z (11 years ago)
From
Alexander van der Horst at U of Amsterdam <A.J.vanderHorst@uva.nl>
A.J. van der Horst (University of Amsterdam) reports on behalf
of a large collaboration:
"We observed the position of the GRB 121128A afterglow at 4.9 GHz with
the Westerbork Synthesis Radio Telescope at November 28 11.34 to
21.06 UT, i.e. 6.2 - 16.0 hours after the burst (GCN 14007).
We do not detect a radio source at the position of the optical
counterpart (GCN 14007). The three-sigma rms noise in the map around
that position is 69 microJy per beam. The formal flux measurement for
a point source at the position of the optical counterpart is 59 +/- 23
microJy.
We would like to thank the WSRT staff for quickly scheduling and
obtaining these observations."