TITLE: GCN CIRCULAR 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 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.