GRB 101130A, GRB 101130
GCN Circular 11441
Subject
Konus-Wind observation of GRB 101130A
Date
2010-12-06T14:04:58Z (15 years ago)
From
Dmitry Frederiks at Ioffe Institute <fred@mail.ioffe.ru>
S. Golenetskii, R.Aptekar, D. Frederiks, E. Mazets, V. Pal'shin,
P. Oleynik, M. Ulanov, D. Svinkin, and T. Cline on behalf
of the Konus-Wind team, report:
GRB 101130A (localized by IPN: Hurley et al., GCN 11437)
triggered Konus-Wind at T0=34766.178s UT (09:39:26.178)
The burst light curve starts with a short (~1.5 s) pulse,
followed by a weaker pulse at ~T0+55 s (with a duration of ~6 s).
The emission is seen up to ~1 MeV.
The Konus-Wind light curve of this GRB is available at
http://www.ioffe.ru/LEA/GRBs/GRB101130_T34766/
As observed by Konus-Wind the burst
had a fluence of 3.1(+1.1/-1.0)x10-6 erg/cm2,
and a 16-ms peak flux measured from T0-0.048s
of 2.8(+0.8/-0.7)x10-6 erg/cm2/s
(both in the 20 keV - 1 MeV energy range).
The time-integrated spectrum of the burst
(from T0 to T0+65.792 s) is best fit
in the 20 keV - 1 MeV range by a simple power law model
with the index = -1.85 (-0.3, +0.35), chi2 = 44/48 dof.
The spectrum of the initial short pulse
(measured from T0 to T0+0.256 s) is best fit
in the 20 keV - 1 MeV range by a power law
with exponential cutoff model, for which
alpha = -0.6 (-0.6, +0.9),
and Ep = 190(-55, +135) keV, chi2 = 26/18 dof.
The spectrum of the second pulse
(measured from T0+57.600 to T0+65.792 s) is best fit
in the 20 keV - 1 MeV range by a simple power law model
with the index = -2.1 (-0.5, +0.7), chi2 = 49/48 dof.
All the quoted results are preliminary.
All the quoted errors are at the 90% confidence level
GCN Circular 11437
Subject
IPN Localization of GRB101130 (possible short duration burst)
Date
2010-12-03T21:32:42Z (15 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@ssl.berkeley.edu>
K. Hurley, on behalf of the MESSENGER and Odyssey GRB teams,
S. Golenetskii, R. Aptekar, E. Mazets, V. Pal'shin, D. Frederiks, and
T. Cline on behalf of the Konus-Wind team,
J. Goldsten, on behalf of the MESSENGER NS GRB team,
I. G. Mitrofanov, D. Golovin, M. L. Litvak, and A. B. Sanin,
on behalf of the HEND-Odyssey GRB team, and
W. Boynton, C. Fellows, K. Harshman, H. Enos, and R. Starr, on
behalf of the GRS-Odyssey GRB team, report:
Konus-Wind, MESSENGER GRNS, and Mars Odyssey HEND observed this
burst at 34766 s on November 30, 2010. As seen by Konus-Wind, the
time history displayed a short (~1.5 s long) pulse, and a weak
pulse at ~T0+50 s (with a duration of ~6 s). There is evidence
for this second pulse in the MESSENGER data at the same time after
the main pulse, confirming their common origin.
We have localized it to a preliminary, 3 sigma error box whose
coordinates are
RA(2000) Dec(2000)
CENTER: 61.803o=04 h 07 m 12.73 s -16.759o=-16 o 45 ' 33.09 "
CORNERS: 62.468o=04 h 09 m 52.39 s -17.210o=-17 o 12 ' 34.62 "
62.953o=04 h 11 m 48.62 s -17.213o=-17 o 12 ' 45.80 "
60.654o=04 h 02 m 37.06 s -16.270o=-16 o 16 ' 11.27 "
61.144o=04 h 04 m 34.57 s -16.297o=-16 o 17 ' 48.56 "
The error box area is ~1500 sq. arcmin. This error box may be improved.
Time history and spectral information will be reported in a forthcoming
GCN Circular.