[vsnet-grb-info 5291] Possible radio detection of GRB 071021 with the VLA

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  6982
SUBJECT: Possible radio detection of GRB 071021 with the VLA
DATE:    07/10/23 13:36:22 GMT
FROM:    Poonam Chandra at U Virginia/NRAO  <pc8s at virginia.edu>

P. Chandra (UVA/NRAO) and D. A. Frail (NRAO) report on behalf of the
Caltech-NRAO-Carnegie GRB Collaboration:

"We observed the field centered on the XRT position of the Swift burst
GRB 071021 (GCN 6958) using the VLA at a frequency of 8.46 GHz.
The observations were taken at a mean time of 06.11 UT on 23nd Oct 07.
We detect possible radio afterglow of GRB 071021 in agreement with NIR
position (GCN # 6971) and the Swift-XRT afterglow position (GCN # 6963).
Our 3-sigma detection yields the flux value of 149+/-44 uJy at the
following position:
RA(J2000)   22 42 34.25
Dec(J2000) +23 43 06.36


The National Radio Astronomy Observatory is a facility of the National
Science Foundation operated under cooperative agreement by Associated
Universities, Inc."