TITLE: GCN CIRCULAR NUMBER: 13696 SUBJECT: GRB 120821A: a long GRB detected by INTEGRAL DATE: 12/08/21 14:47:21 GMT FROM: Sandro Mereghetti at IASF/CNR S.Mereghetti (IASF-Milano), D.Gotz (CEA, Saclay), C.Ferrigno, R.Boissay (ISDC, Versoix), and J.Borkowski (CAMK, Torun) on behalf of the IBAS Localization Team report: a long gamma ray burst lasting about 12 s has been detected by IBAS in the IBIS/ISGRI data at 13:23:45 UT of August 21 Its refined coordinates (J2000) are: RA: 255.2692 [degrees] DEC: -40.5212 [degrees] with an uncertainty of 2 arcmin (90% c.l.). The burst has a fluence of about 3e-7 erg/cm2 (20-200 keV) A plot of the light curve will be posted at http://ibas.iasf-milano.inaf.it/IBAS_Results.html ===================================================================== Sandro Mereghetti INAF - Istituto di Astrofisica Spaziale e Fisica Cosmica - Milano Tel. +39-02-23699323 Fax +39-02-2666017 via Bassini 15, I-20133 Milano, ITALY sandro@iasf-milano.inaf.it http://www.iasf-milano.inaf.it/~sandro/personal.html ===========================================================================