GRB 081016
GCN Circular 8377
Subject
GRB 081016: A long GRB discovered by INTEGRAL
Date
2008-10-16T08:18:04Z (17 years ago)
From
Sandro Mereghetti at IASF/CNR <sandro@iasf-milano.inaf.it>
D.Gotz (CEA-Saclay), S.Mereghetti, A.Paizis (IASF-Milano), S. Soldi,
V.Beckmann, M. Beck, M. Tuerler (ISDC, Versoix), and J. Borkowski (CAMK,
Torun) on behalf of the IBAS Localization Team report:
A GRB lasting about 34 s has been detected by IBAS in IBIS/ISGRI data at
06:51:31 UT of October 16.
The coordinates (J2000) are:
RA = 255.5725 [degrees]
DEC= -23.3301 [degrees]
with an uncertainty of 1.5 arcmin (90% c.l.).
The burst is composed by two distinct peaks, and a preliminary spectral
analysis gives a peak flux in the 20-200 keV range of about 2.4
ph/cmsq/s (1-s integration time) and a fluence over the same energy range
of about 1.8x10e-6 erg/cmsq. Due to data gaps caused by telemetry
saturation these values should be considered as lower limits.
A plot of the light curve will be posted at
http://ibas.iasf-milano.inaf.it/IBAS_Results.html
This message can be cited.
GCN Circular 8379
Subject
GRB 081016: Swift-XRT candidate afterglow detection
Date
2008-10-16T17:19:15Z (17 years ago)
From
Phil Evans at U of Leicester <pae9@star.le.ac.uk>
P.A. Evans (U. Leicester) reports on behalf of the Swift-XRT Team
We have obtained 2 ks of XRT Photon Counting mode data of GRB 081016 (Gotz
et al. GCN Circ. 8377), beginning 20.4 ks after the INTEGRAL trigger. We
find an uncatalogued X-ray source at RA,Dec, 255.57032, -23.33556 which is
equvialent to:
RA (J2000.0): 17 02 16.88
Dec (J2000.0): -23:20:08.0
with an estimated uncertainty of 3.6" (radius, 90% confidence). This
position is 21" from the INTEGRAL position, within the INTEGRAL error
circle. It is not currently possible to determine whether this source is
fading. Further observations are planned.
This circular is an official product of the Swift-XRT team.