TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2746 SUBJECT: GRB 040924: WSRT Radio Observations DATE: 04/09/25 14:06:38 GMT FROM: Alexander van der Horst at U of Amsterdam A.J. van der Horst (University of Amsterdam), E. Rol (University of Leicester) and R.A.M.J. Wijers (University of Amsterdam) report on behalf of a larger collaboration: "We observed the position of the GRB 040924 afterglow at 4.9 GHz with the Westerbork Synthesis Radio Telescope at September 25, 0.41 - 7.36 UT, i.e. 12.54 - 19.49 hours after the burst (GCN 2735). We do not detect a radio source at the position of the optical afterglow (GCN 2734), with a 3 sigma upper limit of 0.12 mJy." This message may be cited.