Oscillation and Future Detection of Failed Supernova Neutrinos from Black Hole Forming Collapse

TL;DR

This paper explores the potential for detecting neutrinos from black hole-forming stellar collapses using SuperKamiokande, highlighting their significance for neutrino astronomy and probing dense matter physics.

Contribution

It demonstrates that neutrino signals from black hole formation are detectable and can provide insights into the equation of state of hot and dense matter.

Findings

Neutrino event numbers from black hole formation are comparable to supernova neutrinos.

Detection depends strongly on the equation of state used in models.

Neutrino observations can probe properties of hot and dense matter.

Abstract

Recently, stellar collapse involving black hole formation from massive stars is suggested to emit enormous fluxes of neutrinos on par with ordinary core-collapse supernovae. We investigate their detectability for the currently operating neutrino detector, SuperKamiokande. Neutrino oscillation is also taken into account for the evaluation. We find that the event number is larger than or comparable to that of supernova neutrinos and, hence, black hole formation is also a candidate for neutrino astronomy. Moreover, we find that the event number depends dominantly on the equation of state used in the computations of the black hole formation. This fact implies that the detection of neutrinos emitted from the black hole progenitors is very valuable to probe the properties of the equation of state for hot and/or dense matter.