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GCN Circular 25112

Subject
LIGO/Virgo S190720a: Upper limits from IceCube neutrino searches
Date
2019-07-20T01:58:20Z (5 years ago)
From
Stefan Countryman at ICECUBE/Columbia U <stc2117@columbia.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 S190720a
in a time range of 1000 seconds [3] centered on the alert event time
(2019-07-20 00:00:16.747 UTC to 2019-07-20 00:16:56.747 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 S190720a calculated from the map
circulated in the 1-Preliminary 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 S190720a ranges from  0.029 to 1.080 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)
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