TITLE: GCN CIRCULAR NUMBER: 15931 SUBJECT: GRB 140304A: CARMA 3mm detection DATE: 14/03/05 17:28:20 GMT FROM: Ashley Zauderer at CfA B. A. Zauderer, T. Laskar, and E. Berger (Harvard) report on behalf of the CARMA Key Project "A Millimeter View of the Transient Universe": "We observed the position of GRB 140304A (Evans et al., GCN 15915) with the Combined Array for Research in Millimeter Astronomy (CARMA) beginning 2014 Mar 5.01 UT (10.8 hours post-burst) at a mean frequency of ~85 GHz. We detect a radio source with a flux of ~0.5 mJy consistent with the enhanced Swift-XRT position (Beardmore et al., GCN 15925), the optical afterglow localization (Gorbovskoy et al., GCN 15914), and our VLA 5.8 GHz position (Laskar et al., GCN 15930). Follow-up observations are in progress. We thank the CARMA staff and observers, Shaye Storm and Robin Dong, for their support of these rapid-response observations."