TITLE: GCN GRB OBSERVATION REPORT NUMBER: 3102 SUBJECT: GRB050315: Radio afterglow DATE: 05/03/16 18:04:36 GMT FROM: Alicia Soderberg at Caltech A. M. Soderberg (Caltech) and D. A. Frail (NRAO) report on behalf of the Caltech-NRAO-Carnegie GRB collaboration: "Using the Very Large Array at 8.5 GHz, we observed the field of GRB050315 (GCN 3094) on 2005 Mar 16.68 UT (t=0.80 d). Within the XRT localization (GCN 3097), we detect a radio source at the following coordinates: RA: 20:25:54.17 Dec: -42:36:01.0 (J2000) with a positional uncertainty of ~0.5 arcsec. Noting that this source is roughly coincident with the optical afterglow position reported by Kelson and Berger (GCN 3100), we interpret this as the radio afterglow of GRB050315. Further observations are planned."