Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...413..658s&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 413, no. 2, p. 658-669.
Astronomy and Astrophysics
Astrophysics
9
Neutron Stars, Stellar Cores, Stellar Evolution, Stellar Temperature, Cooling, Stellar Luminosity, Superfluidity, Surface Temperature, Vortices
Scientific paper
Thermal evolution of neutron stars, including the effect of internal heating in the superfluid layers of the quantum liquid region, is considered. The dissipative processes examined are the dissipation due to the decay of electronic current set up by the motion of generated proton vortex lines and the dissipation due to the proton vortex self-energy release at the phase separation boundary between the crust and the core of the star. This energy dissipation leads to an essential enhancement of surface temperatures and photon luminosities of neutron stars at the photon cooling era of their thermal evolution. Both the standard and nonstandard cooling models are consistent with the upper limits on the neutron star surface temperatures placed by the soft X-ray observations, with the exception of the Vela pulsar. The observed surface temperature of this pulsar suggests nonstandard cooling, with a high internal heating rate in the superfluid core of the star.
Sedrakyan Armen D.
Sedrakyan David M.
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