[vsnet-grb-info 5004] GRB070612A: Radio upper limit from GMRT

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  6714
SUBJECT: GRB070612A: Radio upper limit from GMRT
DATE:    07/08/07 05:39:00 GMT
FROM:    Dipankar Bhattacharya at IUCAA  <dipankar at iucaa.ernet.in>

Sabyasachi Pal, C.H. Ishwara-Chandra, Dipankar Bhattacharya and
Atish P. Kamble report on behalf of a larger collaboration:

We observed the field of GRB 070612A (Grupe et al, GCN 6509) at
1280 MHz, using the Giant Meterwave Radio Telescope, from
MJD 54305.08 to 54305.26 (UT 2007 Jul24 01:55:21 to 06:12:36).
This interval corresponds to 41.97-42.15 days after the burst.
The afterglow was not detected. The formal flux density at the
position of the optical afterglow (Cenko et al, GCN 6525)
was 109 +/- 64 micro Jy (1-sigma).

We thank the GMRT staff who made this observation possible.
GMRT is run by the National Centre for Radio Astrophysics of
the Tata Institute of Fundamental Research.

This message may be cited.


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