The sensitivity of presupernova neutrinos to stellar evolution models

Abstract

We examine the sensitivity of neutrino emissions to stellar evolution models for a 15$M_{\odot }$ progenitor, paying particular attention to a phase prior to the collapse. We demonstrate that the number luminosities in both electron-type neutrinos (${\nu }_e$) and their anti-partners (${\bar{\nu }}_e$) differ by more than an order of magnitude by changing spatial resolutions and nuclear network sizes on stellar evolution models. We also develop a phenomenological model to capture the essential trend of the diversity, in which neutrino luminosities are expressed as a function of central density, temperature and electron fraction. In the analysis, we show that neutrino luminosity can be well characterized by these central quantities. This analysis also reveals that the most influential quantity to the time evolution of ${\nu }_e$ luminosity is matter density, while it is temperature for ${\bar{\nu }}_e$. These qualitative trends will be useful and applicable to constrain the physical state of progenitors at the final stages of stellar evolution from future neutrino observations, although more detailed systematic studies including various mass progenitors are required to assess the applicability.

13 pages, 12 figures, submitted to MNRAS

References in corpus (11)

• Modules for Experiments in Stellar Astrophysics (MESA)
• DARWIN: towards the ultimate dark matter detector
• On Variations Of Pre-Supernova Model Properties
• Detection possibility of the pair-annihilation neutrinos from the neutrino-cooled pre-supernova star
• A new equation of state for core-collapse supernovae based on realistic nuclear forces and including a full nuclear ensemble
• Neutrinos from beta processes in a presupernova: probing the isotopic evolution of a massive star
• Presupernova neutrino events relating to the final evolution of massive stars
• Sensitivity of Super-Kamiokande with Gadolinium to Low Energy Anti-neutrinos from Pre-supernova Emission
• Dependence of weak interaction rates on the nuclear composition during stellar core collapse
• Spectra and rates of bremsstrahlung neutrino emission in stars
• Supernovae SDSS Host Metallicity Catalog and Resulting Metallicity Distributions by SNe Type

Cited by in corpus (2)

• Stellar Neutrino Emission Across The Mass-Metallicity Plane
• Comprehensive neutrino light curves and spectra: from pre-supernova evolution to early supernova phase