GCN Circular 20973
Subject
IceCube-170321A: Konus-Wind upper limits
Date
2017-04-03T13:48:59Z (8 years ago)
From
Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>
D. Svinkin, S. Golenetskii, R.Aptekar, D. Frederiks, P. Oleynik,
M. Ulanov, A. Tsvetkova, A.Lysenko, A. Kozlova, and T. Cline,
on behalf of the Konus-Wind team, report:
Using Konus-Wind (KW) waiting mode data, we have performed a search for
a gamma-ray transient around the time of the cosmic neutrino candidate
IceCube-170321A (2017-03-21 07:32:20.69 UT, hereafter T0; Blaufuss, GCN
20929).
In the interval T0 +/- 1000 s we estimate an upper limit (90% conf.) on
the 10 keV ��� 10 MeV fluence to ~6.6x10^-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). For a
typical long GRB spectrum (the Band function with alpha=-1, beta=-2.5,
and Ep=300 keV), the corresponding limiting peak flux is ~2.3x10^-7
erg/cm^2/s (10 keV - 10 MeV, 2.944 s scale).
All the quoted values are preliminary.