Search for neutrinos in coincidence with gravitational wave events from the LIGO-Virgo O3a Observing Run with the Super-Kamiokande detector

Abstract

The Super-Kamiokande detector can be used to search for neutrinos in time coincidence with gravitational waves detected by the LIGO-Virgo Collaboration (LVC). Both low-energy ($7-100$ MeV) and high-energy ($0.1-10^5$ GeV) samples were analyzed in order to cover a very wide neutrino spectrum. Follow-ups of 36 (out of 39) gravitational waves reported in the GWTC-2 catalog were examined; no significant excess above the background was observed, with 10 (24) observed neutrinos compared with 4.8 (25.0) expected events in the high-energy (low-energy) samples. A statistical approach was used to compute the significance of potential coincidences. For each observation, p-values were estimated using neutrino direction and LVC sky map ; the most significant event (GW190602_175927) is associated with a post-trial p-value of $7.8\%$ ($1.4\sigma$). Additionally, flux limits were computed independently for each sample and by combining the samples. The energy emitted as neutrinos by the identified gravitational wave sources was constrained, both for given flavors and for all-flavors assuming equipartition between the different flavors, independently for each trigger and by combining sources of the same nature.

16 pages, 5 figures. v2: adding corrections from The Astrophysical Journal review

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Cited by in corpus (12)

• GWTC-3: Compact Binary Coalescences Observed by LIGO and Virgo During the Second Part of the Third Observing Run
• IceCube search for neutrinos coincident with gravitational wave events from LIGO/Virgo run O3
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• Search for neutrino counterparts to the gravitational wave sources from LIGO/Virgo O3 run with the ANTARES detector
• Combined Pre-Supernova Alert System with Kamland and Super-Kamiokande
• Memory-triggered supernova neutrino detection
• A Search for IceCube sub-TeV Neutrinos Correlated with Gravitational-Wave Events Detected By LIGO/Virgo
• First all-flavor search for transient neutrino emission using 3-years of IceCube DeepCore data
• Searches for neutrino counterparts of gravitational waves from the LIGO/Virgo third observing run with KM3NeT
• Quasithermal GeV neutrinos from neutron-loaded magnetized outflows in core-collapse supernovae: spectra and light curves
• KamLAND's search for correlated low-energy electron antineutrinos with astrophysical neutrinos from IceCube
• Composite asymmetric dark matter with a dark photon portal: Multimessenger tests