TITLE: GCN CIRCULAR NUMBER: 16515 SUBJECT: GRB 140703A: CARMA 3mm detection DATE: 14/07/03 19:03:28 GMT FROM: Daniel Perley at Caltech D. A. Perley (Caltech) reports on behalf of a larger collaboration: We observed the position of GRB 140703A (Kocevski et al., GCN 16503) with the Combined Array for Research in Millimeter Astronomy starting at 2013-07-03 16:39:55 UT (0.668 days post-GRB) at a mean frequency of ~93 GHz; the observation is still ongoing. We detect a strong source in the existing data set at the location of the X-ray and optical afterglows (Goad et al., GCN 16506; Castro-Tirado et al., GCN 16504) with a flux of approximately 2 mJy. We thank Nikolaus Volgenau, observers K. Jameson and E. Grand, and the CARMA staff for executing the observation.