Search for Neutrinos in Coincidence with Gravitational Wave Events from the LIGO–Virgo O3a Observing Run with the Super-Kamiokande Detector

Journal article

We report the results of a search for MeV-scale astrophysical neutrinos in KamLAND presented as an excess in the number of coincident neutrino interactions associated with the publicly available high-energy neutrino datasets from the IceCube Neutrino Observatory. We find no statistically significant excess in the number of observed low-energy electron antineutrinos in KamLAND, given a coincidence time window of $\pm$500s, $\pm$1,000s, $\pm$3,600s, and $\pm$10,000s around each of the IceCube neutrinos. We use this observation to present limits from 1.8 MeV to 100 MeV on the electron antineutrino fluence, assuming a mono-energetic flux. We then compare the results to several astrophysical measurements performed by IceCube and place a limit at the 90% confidence level on the electron antineutrino isotropic thermal luminosity from the TXS 0506+056 blazar.Comment: 12 pages, 5 figure

Authors: Abe, K; Bronner, C; Hayato, Y; Ikeda, M; Imaizumi, S

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: American Astronomical Society
• Journal: The Astrophysical Journal
• Volume: 918
• Issue: 2
• Pages: 78-78
• Publication date: 2021-09-13
• DOI: 10.3847/1538-4357/ac0d5a
• EISSN: 1538-4357
• ISSN: 0004-637X
• Language: English
• Keywords: Gravitational wave; Neutrino; Coincidence; Equipartition theorem; Gravitational-wave observatory; Event (particle physics); Sky; Detector