TITLE:   GCN CIRCULAR
NUMBER:  23621
SUBJECT: Fermi GBM Observations of IceCube-190104A
DATE:    19/01/06 15:33:50 GMT
FROM:    Rachel Hamburg at UAH  <rkh0007@uah.edu>

A. Goldstein (USRA) and R. Hamburg (UAH)

report on behalf of the Fermi GBM team:


“We have searched the Fermi Gamma-ray Burst Monitor data for a

gamma-ray counterpart to IceCube-190104A (GCN 23605). The

closest onboard trigger occurred approximately 16 hours after the

neutrino event time and was identified as a terrestrial gamma-ray

flash unassociated with the neutrino. The ground-based untargeted

search of GBM data did not find any significant candidates within

+/- 1 hour of the event time. The targeted search ([1],[2]) was also

run +/- 30 s around the event time, and no significant candidates

were found. Upper limits on persistent emission using the Earth

Occultation technique [3] will be forthcoming.”


[1] L. Blackburn et al. 2015, ApJS 217, 8

[2] A. Goldstein et al. arXiv:1612.02395

[3] Wilson-Hodge et al. 2012, ApJS, 201, 33