Published October 2015 | Version v1
Journal article Metadata-only

Effects of δ mesons on baryonic direct Urca processes in neutron star matter

Creators

  • 1. Center for Theoretical Physics, Jilin University, Changchun (China)
  • 2. Changchun Observatory, National Astronomical Observatories, Chinese Academy of Sciences, Changchun (China)

Description

This study investigates the relativistic neutrino emissivity of the nucleonic and hyperonic direct Urca processes in the degenerate baryon matter of neutron stars, within the framework of relativistic mean field theory. In particular, we study the influence of the isovector scalar interaction on the nucleonic and hyperonic direct Urca processes by exchanging δ mesons. The results indicate that δ mesons lead to obvious enhancement of the total neutrino emissivity, which must result in a more rapid cooling rate of neutron star matter. (authors)

Additional details

Identifiers

DOI
10.1088/1674-1137/39/10/105102;

Publishing Information

Journal Title
Chinese Physics. C, High Energy Physics and Nuclear Physics
Journal Volume
39
Journal Issue
10
Journal Page Range
[5 p.]
ISSN
1674-1137

INIS

Country of Publication
China
Country of Input or Organization
China
INIS RN
51032723
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
BARYONS; COOLING; EMISSIVITY; INTERACTIONS; ISOVECTORS; MEAN-FIELD THEORY; MESONS; NEUTRINOS; NEUTRON STARS; RELATIVISTIC RANGE
Descriptors DEC
BOSONS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; HADRONS; LEPTONS; MASSLESS PARTICLES; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; STARS; SURFACE PROPERTIES; TENSORS; VECTORS

Optional Information

Notes
4 figs., 1 tab., 29 refs.; http://dx.doi.org/10.1088/1674-1137/39/10/105102