Ultrahigh-energy neutrino searches using next-generation gravitational wave detectors at radio neutrino detectors: GRAND, IceCube-Gen2 Radio, and RNO-G ...

• Main Authors: Mukhopadhyay, Mainak, Kotera, Kumiko, Wissel, Stephanie, Murase, Kohta, Kimura, Shigeo S.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: arXiv 2024
• Subjects: High Energy Astrophysical Phenomena astro-ph.HE; General Relativity and Quantum Cosmology gr-qc; High Energy Physics - Phenomenology hep-ph; FOS: Physical sciences; Greenland
• Online Access: https://dx.doi.org/10.48550/arxiv.2406.19440; https://arxiv.org/abs/2406.19440

Binary neutron star (BNS) mergers can be sources of ultrahigh-energy (UHE) cosmic rays and potential emitters of UHE neutrinos. The upcoming and current radio neutrino detectors like the Giant Radio Array for Neutrino Detection (GRAND), IceCube-Gen2 Radio, and the Radio Neutrino Observatory in Greenland (RNO-G) are projected to reach the required sensitivities to search for these neutrinos. In particular, in conjunction with the next-generation of gravitational wave (GW) detectors like Cosmic Explorer (CE) and Einstein Telescope (ET), GW-triggered stacking searches can be performed with the UHE neutrino detectors. In this work, we explore the prospects of such searches by implementing in our analysis an upper distance limit based on the sky-localization capabilities of the GW detectors from which meaningful triggers can be collected. We find that if each GW burst is associated with a total isotropic-equivalent energy of $\sim 10^{50} - 10^{51}$ erg emitted in UHE neutrinos, along with a corresponding beaming ... : 18 pages, 6 figures ...