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Effect Of PBF Process Deviating From Chemical Equilibrium On Neutron Star Cooling

Posted on:2020-06-10Degree:MasterType:Thesis
Country:ChinaCandidate:G LiFull Text:PDF
GTID:2370330578453230Subject:Astrophysics
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The neutron star has become a"natural laboratory"for testing physics theory because of its combination of four basic interaction forces.The study of the cooling process of neutron stars is an important way to detect the interior of a star.This paper introduces the superfluid state of neutron star structure and its nucleus,analyzes the superfluid neutrino radiation process,such as DURCA and MURCA inhibition,discusses the neutrino radiation process of critical temperature PBF,and calculates the deviation of PBF net reaction rate.Considering these factors,we have studied the temperature evolution of a simple uniform neutron star model and found that the superfluid inhibition and PBF neutrino radiation make the neutron star colder,while the heating effect caused by the deviation from chemical equilibrium is in some environments.It can delay the cooling of neutron stars.A more realistic neutron star model requires further detailed calculations in the future.
Keywords/Search Tags:neutron stars, neutrino radiation rate, DURCA, MURCA, PBF
PDF Full Text Request
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