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Title: Presupernova Neutrinos: Realistic Emissivities from Stellar Evolution

Abstract

We present a new calculation of neutrino emissivities and energy spectra from a massive star going through the advanced stages of nuclear burning (presupernova) in the months before becoming a supernova. The contributions from β decay and electron capture, pair annihilation, plasmon decay, and the photoneutrino process are modeled in detail, using updated tabulated nuclear rates. We also use realistic conditions of temperature, density, electron fraction, and nuclear isotopic composition of the star from the state-of-the-art stellar evolution code MESA. Results are presented for a set of progenitor stars with mass between $$15\,{M}_{\odot }$$ and $$30\,{M}_{\odot }$$. It is found that β processes contribute substantially to the neutrino emissivity above realistic detection thresholds of few MeV, at selected positions and times in the evolution of the star.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [2]
  1. Arizona State Univ., Tempe, AZ (United States); Univ. of Washington, Seattle, WA (United States)
  2. Arizona State Univ., Tempe, AZ (United States)
Publication Date:
Research Org.:
Univ. of Washington, Seattle, WA (United States); Arizona State Univ., Tempe, AZ (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1537185
Grant/Contract Number:  
FG02-00ER41132; SC0015406
Resource Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal (Online); Journal Volume: 840; Journal Issue: 1; Journal ID: ISSN 1538-4357
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; Astronomy & Astrophysics

Citation Formats

Patton, Kelly M., Lunardini, Cecilia, and Farmer, Robert J. Presupernova Neutrinos: Realistic Emissivities from Stellar Evolution. United States: N. p., 2017. Web. doi:10.3847/1538-4357/aa6ba8.
Patton, Kelly M., Lunardini, Cecilia, & Farmer, Robert J. Presupernova Neutrinos: Realistic Emissivities from Stellar Evolution. United States. doi:10.3847/1538-4357/aa6ba8.
Patton, Kelly M., Lunardini, Cecilia, and Farmer, Robert J. Wed . "Presupernova Neutrinos: Realistic Emissivities from Stellar Evolution". United States. doi:10.3847/1538-4357/aa6ba8. https://www.osti.gov/servlets/purl/1537185.
@article{osti_1537185,
title = {Presupernova Neutrinos: Realistic Emissivities from Stellar Evolution},
author = {Patton, Kelly M. and Lunardini, Cecilia and Farmer, Robert J.},
abstractNote = {We present a new calculation of neutrino emissivities and energy spectra from a massive star going through the advanced stages of nuclear burning (presupernova) in the months before becoming a supernova. The contributions from β decay and electron capture, pair annihilation, plasmon decay, and the photoneutrino process are modeled in detail, using updated tabulated nuclear rates. We also use realistic conditions of temperature, density, electron fraction, and nuclear isotopic composition of the star from the state-of-the-art stellar evolution code MESA. Results are presented for a set of progenitor stars with mass between $15\,{M}_{\odot }$ and $30\,{M}_{\odot }$. It is found that β processes contribute substantially to the neutrino emissivity above realistic detection thresholds of few MeV, at selected positions and times in the evolution of the star.},
doi = {10.3847/1538-4357/aa6ba8},
journal = {The Astrophysical Journal (Online)},
number = 1,
volume = 840,
place = {United States},
year = {2017},
month = {4}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 5 works
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