TITLE: GCN CIRCULAR NUMBER: 4621 SUBJECT: GRB 060123: VLA Radio Observations DATE: 06/01/30 20:21:05 GMT FROM: Dale A. Frail at NRAO Dale A. Frail (NRAO) reports on behalf of a larger collaboration: "We used the Very Large Array to observe the Swift burst GRB 060123 (GCN 4584; GCN 4608) at a frequency of 8.46 GHz on 2006 January 26.47 and January 30.52 UT. No radio emission was detected within the refined 3-arcsec XRT error circle (GCN 4600) above a 4-sigma level at either epoch, with sigma noise values of 26 uJy and 18 uJy, respectively. No 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."