TITLE: GCN CIRCULAR NUMBER: 15299 SUBJECT: GRB 130925A/Sw J0244-2609: mm observations at PdBI DATE: 13/10/03 20:02:01 GMT FROM: Alberto Castro-Tirado at Inst.de Astro. de Andalucia A. J. Castro-Tirado (IAA-CSIC Granada and Univ. de Málaga), M. Bremer, J.-M. Winters and S. Koenig (IRAM Grenoble), on behalf of a large collaboration, report: "Following the detection of the extraordinarily long event GRB 130925A/Sw J0244-2609 by Swift (Lien et al. 2013, GCN 15247) we attempted on Oct 1 (00:30 UT) millimetre observations with the Plateu de Bure Interferometer (PdBI) in the French Alps, in 6-antenna compact D configuration. Due to the low declination, the source was lost for two antennas due to shadowing effects by other antenna. No mm source is detected, with a 3 sigma limit of 0.58 mJy at 86 GHz. This value is a factor of 30 times less than the measured flux density for the tidal disruption flare candidate GRB 110328A/Sw J1644+5734 with PdBI one week post burst (Castro-Tirado et al. 2013, RMxAC 42, 36)."