GCN Circular 7450
Subject
GRB 080319A/B/C: INTEGRAL SPI-ACS light curves available
Event
Date
2008-03-19T16:08:28Z (18 years ago)
From
Volker Beckmann at ISDC <Volker.Beckmann@obs.unige.ch>
V. Beckmann (ISDC), S. Mereghetti (INAF/IASF-Milano), A. von Kienlin
(MPE), M. Beck, V. Savchenko (ISDC), J. Borkowski (CAMK/Torun), D. Gotz
(CEA/Saclay) report on behalf of the INTEGRAL SPI-ACS GRB team:
The three GRB reported on 2008-03-19 by the Swift team (GCN 7426, 7427,
7442) have been independently detected by the SPI Anti-Coincidence
System (ACS) on-board INTEGRAL.
Burst T0 duration max counts in 50 msec
------------------------------------------------------
GRB080319A 05:45:41 10s 370
GRB080319B 06:12:47 57s 5500
GRB080319C 12:25:55 25s 1200
The SPI-ACS light curves are available (both as images and data files)
at http://isdc.unige.ch/Soft/ibas/ibas_acs_web.cgi
The light curves, binned at 50 ms, are derived from 91 independent
detectors with different lower energy thresholds (mainly between 50 keV
and 150 keV) and an upper threshold at about 100 MeV. The ACS response
varies as a function of the GRB incident angle. For these reasons we
caution that the count rates cannot be easily translated into physical
flux units.