TITLE: GCN GRB OBSERVATION REPORT NUMBER: 4192 SUBJECT: GRB051105B - A long GRB detected by INTEGRAL DATE: 05/11/05 13:52:31 GMT FROM: Sandro Mereghetti at IASF/CNR S. Mereghetti (IASF, Milano), D.Gotz (CEA, Saclay), N. Mowlavi, S. Shaw, M. Beck, A. Neronov, J.Soldan (ISDC, Versoix) and J. Borkowski (CAMK, Torun) on behalf of the IBAS Localization Team report: A 20 s long GRB has been detected by IBAS in IBIS/ISGRI data at 11:05:50 UT on November 5 2005. Its refined coordinates (J2000) are: RA: 9.4771 [degrees] DEC: -40.4812 [degrees] with an uncertainty of 2 arcmin (90% c.l. radius). A plot of the light curve will be posted at http://ibas.mi.iasf.cnr.it/IBAS_Results.html This message can be cited.