A global analysis for searching neutrinos associated with the black holes merging gravitational wave events

TL;DR

This study combines data from multiple neutrino observatories to search for neutrinos associated with black hole mergers, finding no significant signals and setting upper limits on neutrino fluence and luminosity.

Contribution

It performs a combined analysis of data from KamLAND, Super-Kamiokande, and Borexino to provide a comprehensive search for neutrinos from black hole mergers.

Findings

No statistically significant neutrino signals detected.

Established 90% confidence level upper limits on neutrino fluence.

Results are consistent with null neutrino emission from black hole mergers.

Abstract

Several neutrino observatories have searched for coincident neutrino signals associated with gravitational waves induced by the merging of two black holes.No statistically significant neutrino signal in excess of background level was observed.These experiments use different neutrino detection technologies and are sensitive to various neutrino types.A combined analysis was performed on the KamLAND, Super-Kamiokande and Borexino experimental data with a frequentist statistical approach to achieve a global picture of the associated neutrino fluence.Both monochromatic and Fermi-Dirac neutrino spectra were assumed in the calculation.The final results are consistent with null neutrino signals associated with a binary of black holes merging process.The derived 90\% confidence level upper limits on the fluence and luminosity of various neutrino types are presented for neutrino energy less than 110 MeV.