TITLE: GCN CIRCULAR NUMBER: 4415 SUBJECT: GRB051227: Radio Observations DATE: 05/12/29 22:37:11 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 GRB051227 (GCN 4397) at a frequency of 8.46 GHz on 2005 December 28.57 UT and December 29.22 UT. No radio emission is detected within the XRT error circle (GCN 4402). At the position of the optical afterglow (GCN 4408) the formal flux density values are -21 +/- 28 uJy and 18 +/- 25, 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."