TITLE:   GCN CIRCULAR
NUMBER:  25514
SUBJECT: LIGO/Virgo S190828l: Upper limits from IceCube neutrino searches
DATE:    19/08/28 11:11:45 GMT
FROM:    Raamis Hussain at IceCube  <raamis.hussain@icecube.wisc.edu>

IceCube Collaboration (http://icecube.wisc.edu/) reports:

Searches [1,2] for track-like muon neutrino events detected by IceCube
consistent with the sky localization of gravitational-wave candidate
S190828l
 in a time range of 1000 seconds [3] centered on the alert event time
(2019-08-28 06:46:49.887 UTC to 2019-08-28 07:03:29.887 UTC) have been
performed. During this time period IceCube was collecting good quality data.
No significant track-like events are found in spatial coincidence of
S190828l calculated from the map circulated in the 2-Initial notice.

IceCube's sensitivity assuming an E^-2 spectrum (E^2 dN/dE) to neutrino
point sources within the locations spanned by the 90% spatial  containment
of S190828l ranges from  0.030 to 1.000 GeV cm^-2 in a 1000 second
time window.

The IceCube Neutrino Observatory is a cubic-kilometer neutrino detector
operating at the geographic South Pole, Antarctica. The IceCube realtime
alert point of contact can be reached at roc@icecube.wisc.edu


[1] Bartos et al. arXiv:1810.11467 (2018) and Countryman et
al.arXiv:1901.05486 (2019)
[2] Braun et al., Astroparticle Physics 29, 299 (2008)
[3] Baret et al., Astroparticle Physics 35, 1 (2011)