[vsnet-grb-info 27278] INTEGRAL detection of a short burst from SGR 1935+2154

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  29381
SUBJECT: INTEGRAL detection of a short burst from SGR 1935+2154
DATE:    21/02/02 20:20:57 GMT
FROM:    Sandro Mereghetti at IASF-Milano/INAF  <sandro.mereghetti at inaf.it>

S.Mereghetti (INAF, IASF-Milano), V.Savchenko, C.Ferrigno, E.Bozzo (ISDC,
Versoix), D.Gotz (CEA, Saclay), L.Ducci (IAAT, Germany and ISDC, Versoix)
and J.Borkowski (CAMK, Torun) report:

A burst from SGR 1935+2154,  that is currently in an active state (e.g. GCN
29365, 29373, 29374, 29377), has been detected by IBAS in the IBIS/ISGRI
data at 12:54:26.71 UT of February 2, 2021.

The burst had a single peak lasting about 50 ms and  a fluence of  1.14e-7
+/- 0.14e-7  erg/cm^2 in the 30-100 keV energy range.

The off-line analysis confirmed the  coordinates derived by IBAS and
distributed in real time in the alert packet (n. 8965) that associated this
event with SGR 1935+2154