Crust structure of neutron stars : J/A+A/645/A102


Authors : Potekhin A.Y. orcid , Chabrier G. (hide) , Chabrier G. et..al

Bibcode : 2021A&A...645A.102P (ADS) (Simbad) (Objects) (hide)

CDS Keywords : Models
UAT : Astronomical models

Model (MC)

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Inserted into VizieR : 21-Jan-2021
Last modification : 06-Sep-2021

Crust structure and thermal evolution of neutron stars in soft X-ray transients. (2021)

Keywords : stars neutron - dense matter - X-rays: binaries - X-rays: individuals: MXB 1659-29

Abstract:The thermal evolution of neutron stars in soft X-ray transients (SXTs) is sensitive to the equation of state, nucleon superfluidity, and the composition and structure of the crust. Carrying out comparisons of the observations of their crust cooling with simulations offers a powerful tool for verifying theoretical models of dense matter. We study the effect of physics input on the thermal evolution of neutron stars in SXTs. In particular, we consider different modern models of the sources of deep crustal heating during accretion episodes and the effects brought on by impurities embedded in the crust during its formation. ...(more)
Abstract: (hide)
The tables present average parameters of a Wigner-Seitz cell in an inner crust of a neutron star, considering nuclear mixtures that arise due to the nuclear statistical equilibrium conditions at the original crust formation. The four tables represent results of computations performed according to the Brussels-Montreal equation-of-state (EoS) models BSk22, BSk24, BSk25, and BSk26. For different mean number densities of baryons n_bar, each table gives an average number of protons in a Wigner-Seitz cell Z_cell, an average number of protons in a nuclear cluster at the center of a Wigner-Seitz cell Z_clust, an average number of nucleons (protons and neutrons) in a Wigner-Seitz cell A_cell, an average number of nucleons in a nuclear cluster at the center of a Wigner-Seitz cell A_clust, and the impurity parameter (the mean-square deviation of Z_clust from its average value) Q_imp.
Alexander Potekhin, palex(at)astro.ioffe.ru

                
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