Cooling of neutron stars and emissivity of neutrinos by the direct Urca process under influence of a strong magnetic field

Neutron stars are born with high temperatures and during a few seconds suffer rapid cooling by emission of neutrinos. The direct Urca process is the main mechanism to explain this loss of energy. In this work we study the influence of a strong magnetic field on the composition of nuclear matter at h...

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Published inJournal of physics. Conference series Vol. 706; no. 5; pp. 52011 - 52015
Main Authors Coelho, E L, Chiapparini, M, Negreiros, R P
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.04.2016
Subjects
Baryons
Cooling
High temperature
Magnetic fields
Muons
Neutrinos
Neutron stars
Neutrons
Nuclear matter
Physics
Stellar magnetic fields
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Summary:Neutron stars are born with high temperatures and during a few seconds suffer rapid cooling by emission of neutrinos. The direct Urca process is the main mechanism to explain this loss of energy. In this work we study the influence of a strong magnetic field on the composition of nuclear matter at high densities and zero temperature. We describe the matter through a relativistic mean-field model with eight light baryons (baryon octet), electrons, muons magnetic field. As output of the numerical calculations, we obtain the relative population for a parametrized magnetic field. We calculate the cooling of neutron stars with different mass and magnetic fields due to direct Urca process.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/706/5/052011