GCN Circular 20139
Subject
IceCube-161103: Konus-Wind upper limits
Date
2016-11-06T16:26:07Z (8 years ago)
From
Dmitry Frederiks at Ioffe Institute <fred@mail.ioffe.ru>
D. Frederiks, S. Golenetskii, R.Aptekar, P. Oleynik, M. Ulanov,
D. Svinkin, A. Tsvetkova, A.Lysenko, A. Kozlova, and T. Cline,
on behalf of the Konus-Wind team, report:
Using Konus-Wind (KW) data, we have performed a search for
a gamma-ray transient around the time of the cosmic neutrino
candidate IceCube-161103A (Taboada, GCN 20119;
http://gcn.gsfc.nasa.gov/notices_amon/38561326_128672.amon)
No triggered KW event happened from ~11 hours before to ~3 days after
the IceCube event time (2016-11-03 09:07:31.12 UT, hereafter T0).
Using Konus-Wind waiting mode data in the interval T0 �� 1000 s,
we estimate an upper limit (90% conf.) on the 20 ��� 1200 keV
fluence to ~9.6x10^-7 erg/cm^2 for a burst lasting less than 2.944 s
and having a typical KW short GRB spectrum (an exponentially cut off
power law with alpha =-0.5 and Ep=500 keV, Svinkin et al. 2016).
For a typical long GRB spectrum (the Band function with alpha=-1,
beta=-2.5, and Ep=250 keV), the corresponding limiting peak flux
is ~7.2x10^-7 erg/cm^2/s (20 ��� 1200 keV, 2.944 s scale).
All the quoted values are preliminary.