GCN Circular 9620
Subject
GRB 090704: a long GRB found in INTEGRAL off-line analysis
Date
2009-07-07T16:23:44Z (16 years ago)
From
Sandro Mereghetti at IASF/CNR <sandro@iasf-milano.inaf.it>
S.Mereghetti, A.Paizis (IASF-Milano), D.Gotz (CEA-Saclay), C. Ferrigno, M.
Beck (ISDC, Versoix), and J. Borkowski (CAMK, Torun) on behalf of the IBAS
Localization Team report:
During an off-line analysis of low significance IBAS triggers we found a
long GRB detected in IBIS/ISGRI data at 05:47:43 UT on July 4th. The
burst had a duration of about 60 s.
The burst coordinates (J2000) are:
RA: 208.205 [degrees]
DEC: 22.790 [degrees]
with an uncertainty of 1.7 arcmin (1 sigma c.l.).
The peak flux in the 20-200 keV range was about 2 ph/cmq/s (1 s
integration time) and the fluence over the same energy range about 6e-6
erg/cmq.
The low significance of the IBAS trigger, below the threshold for
automatic alert delivery, was due to the very large off-axis angle of
about 14 degrees.
A plot of the light curve will be posted at
http://ibas.iasf-milano.inaf.it/IBAS_Results.html
This message can be cited.