TITLE: GCN CIRCULAR NUMBER: 14480 SUBJECT: GRB 130427A: VLA 5 GHz detection DATE: 13/04/28 03:38:35 GMT FROM: Ashley Zauderer at CfA B. A. Zauderer, E. Berger, S. Chakraborti, and A. Soderberg (Harvard) report on behalf of a larger collaboration: "We observed the position of GRB 130427A (Maselli et al.; GCN 14448) beginning 2013 Apr 27.99 (dt = 0.67 d) with the Very Large Array in its D configuration (synthesized beam ~18'' x 11''). At a mean frequency of ~5.8 GHz, we detect a source with a flux of ~1 mJy +/- 20 uJy at a position consistent with the optical afterglow (e.g. Elenin et al., Perley et al.; GCNs 14450, 14451). Followup observations are planned for this nearby z~0.34 GRB (Levan et al., Xu et al; GCNs 14455, 14478). We thank the VLA observatory staff for their support of these observations."