[vsnet-grb-info 8240] VLA radio upper limit on GRB 090809

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  9765
SUBJECT: VLA radio upper limit on GRB 090809
DATE:    09/08/11 14:53:03 GMT
FROM:    Poonam Chandra at U Virginia/NRAO  <pc8s at virginia.edu>

Poonam Chandra (RMC) and Dale A. Frail (NRAO) report on behalf of a
larger collaboration:

"We used the Very Large Array to observe the field of view toward
GRB 090809 (GCN 9754) at a frequency of 8.46 GHz on 2009 Aug. 11.37
UT. The GRB radio afterglow is undetected. The peak flux at the NOT
optical afterglow position (GCN 9755) is 8+/-39 uJy.

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