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In this work, we have calculated the transport coefficients: shear viscosity and thermal conductivity inside the neutron star core. Our calculation is based on the relativistic kinetic theory approach using a modified BUU equation for…

核理论 · 物理学 2026-03-20 Utsab Gangopadhyaya , Suman Pal , Gargi Chaudhuri

We consider transport properties of the hypernuclear matter in neutron star cores. In particular, we calculate the thermal conductivity, the shear viscosity, and the momentum transfer rates for np$\Sigma^{-}\Lambda e\mu$ composition of…

高能天体物理现象 · 物理学 2021-06-24 Peter Shternin , Isaac Vidaña

We calculate thermal conductivity and shear viscosity of nucleons in dense nuclear matter of neutron star cores in the non-relativistic Brueckner-Hartree-Fock framework. Nucleon-nucleon interaction is described by the Argonne v18 potential…

太阳与恒星天体物理 · 物理学 2015-06-17 P. S. Shternin , M. Baldo , P. Haensel

The thermal conductivity and shear viscosity of dense nuclear matter, along with the corresponding shear viscosity timescale of canonical neutron stars (NSs), are investigated, where the effect of Fermi surface depletion (i.e., the…

核理论 · 物理学 2021-01-20 X. L. Shang , P. Wang , W. Zuo , J. M. Dong

We present a numerical study of shear viscosity and thermal conductivity of symmetric nuclear matter, pure neutron matter and $\beta$-stable nuclear matter, in the framework of the Brueckner theory. The calculation of in-medium cross…

太阳与恒星天体物理 · 物理学 2014-11-21 H. F. Zhang , U. Lombardo , W. Zuo

The transport properties of neutron star matter play an important role in many astrophysical processes. We report the results of a calculation of the shear viscosity and thermal conductivity coefficients of the hard-sphere fermion system of…

核理论 · 物理学 2016-03-23 Angela Mecca , Alessandro Lovato , Omar Benhar , Artur Polls

Thermal conductivity and shear viscosity of npe$\mu$ matter in non-superfluid neutron star cores are considered in the framework of Brueckner-Hartree-Fock many-body theory. We extend our previous work (Shternin, Baldo and Haensel, 2013) by…

核理论 · 物理学 2021-04-05 P S Shternin , M Baldo , H-J Schulze

We consider the thermal conductivity, shear viscosity, and momentum relaxation rates in the nucleon cores of the neutron stars. We study how the choice of the nuclear interaction and the model for three-body forces may affect these…

高能天体物理现象 · 物理学 2020-09-11 Peter Shternin , Marcello Baldo

Background: The two-flavor color superconducting (2SC) phase of quark matter is a possible constituent of the core of neutron stars. To assess its impact on the observable behavior of the star one must analyze transport properties, which in…

高能物理 - 唯象学 · 物理学 2014-11-19 Mark G. Alford , Hiromichi Nishimura , Armen Sedrakian

We compute the thermal conductivity and thermoelectric power (thermopower) of the inner crust of compact stars across a broad temperature-density domain relevant for proto-neutron stars, binary neutron-star mergers, and accreting neutron…

高能天体物理现象 · 物理学 2025-12-02 Henrik Danielyan , Arus Harutyunyan , Armen Sedrakian

The diffusive thermal conductivity of neutrons in dense matter [$\rho \sim (1 - 8) \times 10^{14}$ g cm$^{-3}$] of neutron star cores is calculated. The contribution from neutron--neutron and neutron--proton collisions is taken into…

天体物理学 · 物理学 2009-11-06 D. A. Baiko , P. Haensel , D. G. Yakovlev

New calculations of the thermal and electrical electron conductivities are performed for a broad range of physical parameters typical for envelopes of neutron stars and cores of white dwarfs. We consider stellar matter composed of…

天体物理学 · 物理学 2011-05-23 A. Y. Potekhin , D. A. Baiko , P. Haensel , D. G. Yakovlev

The transport property of cold and dense nucleon matter is important for nuclear physics but is relatively less studied than that at finite temperatures. In this paper, we present a primary study of bulk and shear viscosities in the limit…

核理论 · 物理学 2025-04-09 Jianing Li , Weiyao Ke

We study the shear and bulk viscosity coefficients as well as the thermal conductivity as arising from the collisions among phonons in superfluid neutron stars. We use effective field theory techniques to extract the allowed phonon…

太阳与恒星天体物理 · 物理学 2014-12-01 Laura Tolos , Cristina Manuel , Sreemoyee Sarkar , Jaume Tarrus

We discuss the results of calculations of the shear viscosity and thermal conductivity of pure neutron matter, carried out within the Landau-Abrikosov-Khalatnikov formalism. The probability of neutron-neutron collisions in the nuclear…

核理论 · 物理学 2010-04-06 Omar Benhar , Artur Polls , Marco Valli , Isaac Vidana

As pointed out by Kutschera and W{\'o}jcik, very low concentration of protons combined with a specific density dependence of effective neutron-proton interaction could lead to a localization of ``proton impurities'' in neutron medium at…

天体物理学 · 物理学 2011-03-17 D. A. Baiko , P. Haensel

Practical expressions are derived for evaluation of electrical and thermal conductivities and thermopower of degenerate electrons in the outer envelopes of neutron stars with magnetic fields. All tensor components of the kinetic…

天体物理学 · 物理学 2007-05-23 A. Y. Potekhin

We examine electron-transport coefficients in magnetized hot and dense electron-ion plasma relevant in binary neutron star merger simulation. We calculate electrical and thermal conductivities in low density, high temperature, highly…

核理论 · 物理学 2023-04-27 Sreemoyee Sarkar , Souvik Priyam Adhya

In this article, shear viscosity, bulk viscosity, and thermal conductivity of a hot QCD medium have been studied in the presence of a strong magnetic field. To model the hot magnetized QCD matter, an extended quasi-particle description of…

核理论 · 物理学 2019-02-19 Manu Kurian , Sukanya Mitra , Snigdha Ghosh , Vinod Chandra

I consider the thermal conductivity and shear viscosity of leptons (electrons and muons) in the nucleon NS cores where protons are in the superconducting state. I restrict the consideration to the case of not too high temperatures…

高能天体物理现象 · 物理学 2018-09-26 Peter Shternin
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