GCN Circular 25062
Subject
IceCube-190712A: Upper limits from Fermi-GBM Observations
Event
Date
2019-07-12T22:35:01Z (7 years ago)
From
Bagrat Mailyan at UAH <bm0054@uah.edu>
B. Mailyan (UAH) and J. Wood (NASA) report on behalf of the Fermi-GBM Team:
For the IceCube high-energy neutrino candidate event 190712A (GCN 25057),
at the event time Fermi-GBM was observing the reported neutrino location at:
RA: 76.46 (+5.09 -6.83 deg 90% PSF containment) J2000
Dec: 13.06 (+4.48 -3.44 deg 90% PSF containment) J2000
There was no Fermi-GBM onboard trigger around the event time of the
neutrino candidate.
The GBM targeted search, the most sensitive, coherent search for GRB-like
signals, was run from +/-30 s around the neutrino candidate time. From this
search, no significant signal was found related to IceCube-190712A.
We set upper limits on impulsive gamma-ray emission. Using the
representative soft, normal, and hard GRB-like templates
(arXiv:1612.02395), we report the following 3 sigma flux upper limits over
10-1000 keV (in units of 10^-7 erg/s/cm^2):
Timescale soft norm hard
--------------------------------------
0.128 s: 3.3e-07 6.5e-07 1.4e-06
1.024 s: 8.2e-08 1.9e-07 4.7e-07
8.192 s: 3.0e-08 5.6e-08 1.1e-07