[vsnet-grb-info 22963] IceCube-190712A: Upper limits from Fermi-GBM Observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  25062
SUBJECT: IceCube-190712A: Upper limits from Fermi-GBM Observations
DATE:    19/07/12 22:35:01 GMT
FROM:    Bagrat Mailyan at UAH  <bm0054 at 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