TITLE: GCN CIRCULAR NUMBER: 2419 SUBJECT: Ongoing Bursting Activity from SGR 1806-20 detected with IBAS DATE: 03/10/15 12:46:32 GMT FROM: Diego Gotz at IASF-CNR D. Gotz, S. Mereghetti (IASF, Milano) and M. Beck (ISDC) for the ISDC IBAS Localization Team, F. Mirabel (CEA, Saclay) and the INTEGRAL Science Working Team report: Several more bursts from SGR 1806-20 have been detected by IBAS during INTEGRAL Core Program Galactic Center Deep Exposure. Their times, preliminary fluences and durations are summarized in the following table. The positions of the bursts are all consistent with SGR 1806-20 within 2 arcmin. The bursts were detected with the IBIS/ISGRI instrument in the 15-100 keV energy range. Date October 2003 25-100 keV Fluence Duration Day UT (erg cm-2) (s) 11 01:26:27.07 1.0 x 10-8 0.1 14 14:31:45.41 2.0 x 10-8 0.1 15 02:35:19.66 2.0 x 10-8 0.1 15 04:55:00.88 2.0 x 10-7 0.18 15 07:37:47.57 3.0 x 10-8 0.1 (*) 15 07:55:52.97 1.5 x 10-8 0.1 15 07:56:21.07 1.0 x 10-8 2 x 0.1 (**) 15 10:19:31.94 4.0 x 10-8 0.13 15 11:00:28.77 4.0 x 10-8 0.15 15 11:17:05.32 2.0 x 10-8 0.2 (*) This burst is preceeded by a small precursor lasting ~0.05 s (**) This burst consists of two distinct peaks, lasting ~0.1 s each, separated by ~0.2 s. The fluence given is for the first one. The second is has a smaller peak flux, but is harder. This message can be cited.