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GCN Circular 33980

Subject
LIGO/Virgo/KAGRA S230529ay: Upper limits from a two-week IceCube neutrino search
Date
2023-06-16T21:56:09Z (10 months ago)
From
Jessie Thwaites at IceCube/U Wisc-Madison <thwaites@wisc.edu>
IceCube Collaboration (http://icecube.wisc.edu/) reports:

IceCube has performed an additional search [1] for track-like muon neutrino events consistent with the sky localization of gravitational-wave candidate S230529ay in a time range of -0.1 day, +14 days from the alert event time (2023-05-29 15:51:00.03 UTC to 2023-06-12 18:15:00.03 UTC). 

During this time period IceCube was collecting good quality data. In this case, we report a p-value of 0.38, consistent with no significant excess of track events. 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 the 4-Update map ranges from 0.028 to 1.219 GeV cm^-2 in this 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] Abbasi et al. Astrophys.J. 944 (2023) 1, 80
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