Late time supernova neutrino signal and proto-neutron star radius

Abstract

We discuss the possibility of reconstructing the newly formed proto-neutron star radius from the late time neutrino signal. A black-body emission is assumed for the neutron star cooling phase. We parametrize the neutrino time-integrated fluxes based on simulations of Roberts and Reddy. A likelihood analysis of the inverse-beta decay and elastic scattering events in Hyper-Kamiokande is performed in both three flavor and an effective one flavor scenario. We show that the precision achievable in the radius reconstruction strongly depends on a correlation with the pinching parameter and therefore the corresponding prior. Although this correlation hinders the precise measurement of the newly formed neutron star radius, it could help measure the pinching parameters with good accuracy in view of the current constraints on neutron star radius, or if the neutron star radius is precisely measured.

arXiv comment21 pages, 11 figures, 5 tables

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Cited by in corpus (11)

• Fast Flavor Depolarization of Supernova Neutrinos
• Core-collapse supernova neutrino emission and detection informed by state-of-the-art three-dimensional numerical models
• Retrieval of energy spectra for all flavor of neutrinos from core-collapse supernova with multiple detectors
• Efficient estimation method for time evolution of proto-neutron star mass and radius from supernova neutrino signal
• Turbulence Fingerprint on Collective Oscillations of Supernova Neutrinos
• Neutrinos from explosive transients at the dawn of multi-messenger astronomy
• Supernova neutrino fluxes in HALO-1kT, Super-Kamiokande, and JUNO
• What can be learned from a proto-neutron star's mass and radius?
• Spontaneous Scalarization in Proto-neutron Stars
• Status and Perspectives of Neutrino Physics
• Supernova $\nu$ flavour conversions in DUNE: the slow, the fast and the standard