TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2931 SUBJECT: DETECTION OF POLARIZATION OF THE RADIO EMISSION FROM SGR 1806-20 DATE: 05/01/03 21:16:21 GMT FROM: Peter Woods at UAH/MSFC DETECTION OF POLARIZATION OF THE RADIO EMISSION FROM SGR 1806-20 B. M. Gaensler (CfA), C. Kouveliotou (NASA/MSFC, NSSTC), R. Wijers (University of Amsterdam), M. Garrett (JIVE), M. Finger, P. Woods, S. Patel (USRA, NSSTC), M. McLaughlin (Jodrell Bank) report on behalf of a larger team: Further to the reports on the radio emission from SGR 1806-20 (Cameron & Kulkarni, GCN 2928, and Gaensler et al, GCN 2929, Atel # 373) we detect linear polarization from the source at 1.4, 4.9, 8.5 GHz at a level of at least 2.6, 0.9, 3.8%, respectively. We caution, however, that these are very preliminary results and more detailed analysis is underway to account for the possibility of polarization leakage from the total intensity signal.