TITLE: GCN CIRCULAR NUMBER: 37630 SUBJECT: GRB 240929A long GRB detected by INTEGRAL DATE: 24/09/29 21:00:52 GMT FROM: Sandro Mereghetti at IASF-Milano/INAF <sandro.mereghetti@inaf.it> S.Mereghetti (INAF, 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 20 s has been detected by IBAS in the IBIS/ISGRI data at 19:50:02 UT of 2024 September 29. The refined coordinates (J2000) are: R.A.= 2.4233 deg DEC.= 74.8275 deg with an uncertainty of 2 arcmin (90% c.l.). A preliminary analysis gives a peak flux of about 5 ph/cm2/s (20-200 keV, 1-s integration time) and a fluence in the same energy range of about 3e-6 erg/cmq. Due to telemetry saturation, these values should be considered as lower limits. This burst has also been detected by Fermi/GBM (GCN 37627). 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/37630. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...