TITLE: GCN CIRCULAR NUMBER: 9060 SUBJECT: GRB 090328: Radio afterglow detection DATE: 09/03/31 13:04:13 GMT FROM: Dale A. Frail at NRAO D. A. Frail (NRAO), P. Chandra (RMC), and B. Cenko (UC Berkeley) report on behalf of a larger collaboration: "We observed a field toward the optical afterglow (GCN Circ. 9046, GCN Circ. 9048) of the Fermi GBM/LAT GRB 090328 (GCN Circ. 9044, GCN Circ. 9057) on March 30.99 UT using the Very Large Array (VLA) at a frequency of 8.46 GHz. We detect an unresolved radio source at the GRB afterglow position with a flux density of 337+/-60 uJy at a (J2000) position of: RA = 06h 02m 39.67s DEC = -41d 52' 53.8" with a conservative error of 0.25" The source was not detected (<180 uJy) in observations taken 24 hours earlier. Further observations are planned. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc."