Theory of neutrino emission from nucleon–hyperon matter in neutron stars: angular integrals

Investigations of thermal evolution of neutron stars with hyperon cores require neutrino emissivities for many neutrino reactions involving strongly degenerate particles (nucleons, hyperons, electrons, muons). We calculate the angular integrals I n (over orientations of momenta of n degenerate parti...

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Bibliographic Details
Published in:Astrophysics and space science 2016-08, Vol.361 (8), p.1-10, Article 267
Main Authors: Kaminker, A. D., Yakovlev, D. G., Haensel, P.
Format: Article
Language:English
Subjects:
Astrobiology
Astronomy
Astrophysics
Astrophysics and Astroparticles
Cosmology
Emissivity
Hyperons
Integrals
Neutrinos
Neutron stars
Neutrons
Nucleons
Observations and Techniques
Original Article
Physics
Physics and Astronomy
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
Stars & galaxies
Texts
Theory
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Summary:Investigations of thermal evolution of neutron stars with hyperon cores require neutrino emissivities for many neutrino reactions involving strongly degenerate particles (nucleons, hyperons, electrons, muons). We calculate the angular integrals I n (over orientations of momenta of n degenerate particles) for major neutrino reactions with n = 3 , 4 , 5 at all possible combinations of particle Fermi momenta. The integrals I n are necessary ingredients for constructing a uniform database of neutrino emissivities in dense nucleon–hyperon matter. The results can also be used in many problems of physical kinetics of strongly degenerate systems.
ISSN:0004-640X
1572-946X
DOI:10.1007/s10509-016-2854-5