[vsnet-grb-info 7391] Radio observation of GRB 090201 with ATCA

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  8955
SUBJECT: Radio observation of GRB 090201 with ATCA
DATE:    09/03/09 06:56:08 GMT
FROM:    Aquib Moin at CIRA/ATNF  <aquib.moin at postgrad.curtin.edu.au>

Aquib Moin (Curtin Institute of Radio Astronomy / Australia Telescope
National Facility), Steven Tingay (Curtin Institute of Radio Astronomy),
Chris Phillips (Australia Telescope National Facility), Gregory Taylor
(University of New Mexico), Mark Wieringa (Australia Telescope National
Facility) and Ralph Martin (Perth Observatory) report:

We observed the VLT position of the GRB090201 optical afterglow (GCN
8873) at 4.800 and 4.928 GHz with the Australia Telescope Compact Array
(ATCA) between 01:00:00 UT and 22:00:00 UT on February 21/22, 2009.

We did not detect a radio source at the optical afterglow position of
the GRB090201 (GCN 8873). The data at 4.800 and 4.928 GHz were merged
and the radio flux density at the afterglow position found out to be
-0.430 +/- 0.280 mJy/beam (1-sigma).

The Australia Telescope Compact Array (/ Parkes telescope / Mopra
telescope / Long Baseline Array) is part of the Australia Telescope
which is funded by the Commonwealth of Australia for operation as a
National Facility managed by CSIRO.

See the 4.800 & 4.928 GHz combined image at:

http://cira.ivec.org/dokuwiki/doku.php/grb/grb090201/grb090201_field_image