TITLE: GCN CIRCULAR NUMBER: 23469 SUBJECT: GRB 181201A: a long GRB detected by INTEGRAL DATE: 18/12/01 03:43:01 GMT FROM: Sandro Mereghetti at IASF-Milano/INAF S.Mereghetti (IASF-Milano), D.Gotz (CEA, Saclay), C.Ferrigno, E.Bozzo, V.Savchenko (ISDC, Versoix), L.Ducci (IAAT, Germany and ISDC, Versoix) and J.Borkowski (CAMK, Torun) report: a gamma ray burst lasting about 180 s has been detected by IBAS in the IBIS/ISGRI data at 02:38 UT of 1 December 2018 The refined coordinates (J2000) are: R.A.= 319.3009 deg DEC.= -12.6242 deg with an uncertainty of 2 arcmin (90% c.l.). The burst was bright and saturated the telemetry. Therefore, we can only give lower limits to its peak flux of greater than 2 counts/cm2/s (20-200 keV, 1-s integration time) and a fluence in the same energy range of more than 1e-4 erg/cmq. A plot of the light curve will be posted at http://ibas.iasf-milano.inaf.it/IBAS_Results.html