Self-similarity relations for cooling superfluid neutron stars
Monthly Notices of the Royal Astronomical Society, ISSN: 1365-2966, Vol: 446, Issue: 4, Page: 3621-3630
2015
- 16Citations
- 6Captures
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Article Description
We consider models of cooling neutron stars with nucleon cores which possess moderately strong triplet-state superfluidity of neutrons. When the internal temperature drops below the maximum of the critical temperature over the core, T, this superfluidity sets in. It produces a neutrino outburst due to Cooper pairing of neutrons which greatly accelerates the cooling.We showthat the cooling of the star with internal temperature T within 0.6 T ≲T≤T is described by analytic self-similar relations. A measurement of the effective surface temperature of the star and its decline, supplemented by assumptions on star's mass, radius and composition of heat-blanketing envelope, allows one to construct a family of cooling models parametrized by the value of T. Each model reconstructs cooling history of the star including its neutrino emission level before neutron superfluidity onset and the intensity of Cooper pairing neutrinos. The results are applied to interpret the observations of the neutron star in the Cassiopeia A supernova remnant.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84985036625&origin=inward; http://dx.doi.org/10.1093/mnras/stu2339; http://academic.oup.com/mnras/article/446/4/3621/2892621/Selfsimilarity-relations-for-cooling-superfluid; http://academic.oup.com/mnras/article-pdf/446/4/3621/9384743/stu2339.pdf; https://dx.doi.org/10.1093/mnras/stu2339; https://academic.oup.com/mnras/article/446/4/3621/2892621
Oxford University Press (OUP)
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