Reviews of topical problems

Cooling of neutron stars and superfluidity in their cores

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Ioffe Institute, ul. Polytekhnicheskaya 26, St. Petersburg, 194021, Russian Federation

We study the heat capacity and neutrino emission reactions (direct and modified Urca processes, nucleon-nucleon bremsstrahlung, Cooper pairing of nucleons) in the supranuclear density matter of neutron star cores with superfluid neutrons and protons. Various superfluidity types are analysed (singlet-state pairing and two types of triplet-state pairing, without and with gap nodes at the nucleon Fermi surface). The results are used for cooling simulations of isolated neutron stars. Both the standard cooling and the cooling enhanced by the direct Urca process are strongly affected by nucleon superfluidity. Comparison of the cooling theory of isolated neutron stars with observations of their thermal radiation may give stringent constraints on the critical temperatures of the neutron and proton superfluidities in the neutron star cores.

Text can be downloaded in Russian. English translation is available on IOP Science.
PACS: 04.40.−b, 26.60.+c, 95.30.−k, 97.60.Jd (all)
DOI: 10.1070/pu1999v042n08ABEH000556
Citation: Yakovlev D G, Levenfish K P, Shibanov Yu A "Cooling of neutron stars and superfluidity in their cores" Phys. Usp. 42 737 (1999)
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Оригинал: Яковлев Д Г, Левенфиш К П, Шибанов Ю А «Остывание нейтронных звезд и сверхтекучесть в их ядрах» УФН 169 825–868 (1999); DOI: 10.3367/UFNr.0169.199908a.0825

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