Other
Scientific paper
May 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...372..251v&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 372, May 1, 1991, p. 251-258. DOE-supported research.
Other
22
Energy Sources, Neutron Stars, Stellar Interiors, Steady State, Stellar Luminosity, Stellar Temperature, X Ray Stars
Scientific paper
The thermal response of 1.4 solar mass neutron stars to steady state internal energy sources is studied. A thermal evolution model, which calculates the interior temperature distribution, is used. The potentially observable surface luminosity is lower than the source rate because of volume neutrino emission, nonisothermal temperature profiles, and redshift factors. Heating rates between 10 to the 30th and 10 to the 41st ergs/s are applied as either a central point source or an inner crust source. The latter models the heat generated as superfluid vortex lines break free from pinning nuclei. The latter case gives heat generation in the stellar layers between 10 to the 12th and 10 to the 14th g/cu cm, peaking between 1.5 and 10 to the 13th g/cu cm. Results are given for a surface field B = 10 to the 13th G and for B = 0. The effects of a central accelerated cooling mechanism, represented by a free-quark phase, are shown. These results from the thermal evolution model are compared with isothermal models to establish the range of validity of the latter.
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