TITLE: GCN CIRCULAR NUMBER: 38280 SUBJECT: GRB241120A: a long GRB detected by INTEGRAL DATE: 24/11/20 07:01:13 GMT FROM: Diego Gotz at CEA <diego.gotz@cea.fr> D.Gotz (CEA, Saclay), S.Mereghetti (INAF, IASF-Milano), 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 4 s has been detected by IBAS in the IBIS/ISGRI data at 05:53:58 UT of 2024 November 20. The refined coordinates (J2000) are: R.A.= 194.2908 deg, DEC.= 52.1504 deg with an uncertainty of 1 arcmin (90% c.l.). A preliminary analysis gives a peak flux of about 2 ph/cm2/s (20-200 keV, 1-s integration time) and a fluence in the same energy range of about 1.3e-06 erg/cmsq. This burst has also been detected by Fermi/GBM (GCN 38279), and its position is at 2.7° from the Fermi reported position. A plot of the light curve will be posted at http://ibas.iasf-milano.inaf.it/IBAS_Results.html View this GCN Circular online at https://gcn.nasa.gov/circulars/38280. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...