TITLE: GCN CIRCULAR NUMBER: 9016 SUBJECT: GRB 090313: WSRT Radio Detection DATE: 09/03/23 05:45:35 GMT FROM: Alexander van der Horst at NASA/MSFC A.J. van der Horst (NASA/MSFC/ORAU) and A.P. Kamble (University of Amsterdam) report on behalf of a larger collaboration: "We reobserved the position of the GRB 090313 afterglow at 4.9 GHz with the Westerbork Synthesis Radio Telescope at March 20 18.89 UT to March 21 6.88 UT, i.e. 7.41 - 7.91 days after the burst (GCN 8980). We detect a radio source with a flux density of 165 +/- 30 microJy at the position of the optical counterpart (GCN 8979). We would like to thank the WSRT staff for scheduling and obtaining these observations."