Observing cosmological binary mergers with next generation neutrino and gravitational wave detectors

Zidu Lin; Cecilia Lunardini

doi:10.1103/PhysRevD.101.023016

paper

Observing cosmological binary mergers with next generation neutrino and gravitational wave detectors

arXiv:1907.00034 · doi:10.1103/PhysRevD.101.023016

Abstract

We discuss the potential of detecting thermal neutrinos from matter-rich binary mergers, via a decades-long multi-messenger campaign involving a Mt-scale water Cherenkov neutrino detector and one or more next generation gravitational wave detectors, capable of observing mergers up to redshift $z \sim 2$ . The search of neutrinos in time-coincidence with gravitational wave detections will allow to identify single neutrinos from individual mergers above the background, and to study their distributions in energy, redshift and type (double neutron-star or neutron-star-black hole merger) of the candidate sources. We find that, for merger rates consistent with current LIGO-Virgo constraints, and for a $100 Mt \cdot yr$ exposure, between $O (1 0^{- 1})$ and $O (10)$ neutrino events are expected. For extreme cases of mergers with more than $1 0^{52}$ ergs emitted in $ν ˉ_{e}$ , the number of events can be as large as $\sim 100$ , with sensitivity to mergers up to redshift $z \sim 0.5$ or so. Such scenarios can already be tested with a $10 Mt \cdot yr$ exposure, resulting in constraints on the post-merger evolution of the systems being considered.

arXiv commentComments: LaTeX, 13 pages, 8 figures, added Figure and references, accepted by Phys. Rev. D

Observing cosmological binary mergers with next generation neutrino and gravitational wave detectors

Abstract

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