[vsnet-grb-info 2200] GRB 050925: WSRT Radio Observations

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4039
SUBJECT: GRB 050925: WSRT Radio Observations
DATE:    05/09/26 17:15:40 GMT
FROM:    Alexander van der Horst at U of Amsterdam  <avdhorst at science.uva.nl>

A.J. van der Horst (University of Amsterdam) reports on behalf of a larger
collaboration:

"We observed the position of the short burst GRB 050925 at 4.9 GHz with
the Westerbork Synthesis Radio Telescope at Sep 25 13.48 UT to Sep 26 1.47
UT, i.e. 0.18 - 0.68 days after the burst (GCN 4034).
No radio sources are seen in the refined Swift-BAT error circle (GCN 4037)
above a 3-sigma level of 72 microJy. We measure a formal flux of 44 +/- 24
microJy at the center of the error circle (GCN 4037).
We note there is a bright radio source, with a flux of 878 +/- 31 microJy,
just outside this error circle at RA 20h13m47.8s, Dec +34d18'38" (J2000)."

This message may be cited.