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Electrical conductivity of finite-temperature plasma in neutron star crusts is studied for applications in magneto-hydrodynamical description of compact stars. We solve the Boltzmann kinetic equation in relaxation time approximation taking…

高能天体物理现象 · 物理学 2022-01-19 Arus Harutyunyan , Armen Sedrakian

We compute the anisotropic electrical conductivity tensor of the inner crust of a compact star at non-zero temperature by extending a previous work on the conductivity of the outer crust. The physical scenarios, where such crust is formed,…

高能天体物理现象 · 物理学 2025-12-04 Arus Harutyunyan , Armen Sedrakian , Narine T. Gevorgyan , Mekhak V. Hayrapetyan

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 thermal conductivity of a dense {\it multi-component} plasma is critical to the modeling of accreting neutron stars. To this end, we perform large-scale molecular dynamics simulations to calculate the static structure factor of the…

高能天体物理现象 · 物理学 2009-09-28 J. Daligault , S. Gupta

Thermal and electric conductivities of relativistic degenerate electrons are calculated for the case when electrons scatter by phonons in Coulomb crystals made of spherical finite--size nuclei at densities $10^{11}$~g/cm$^3 < \rho <…

天体物理学 · 物理学 2007-05-23 D. A. Baiko , D. G. Yakovlev

We calculate the thermal conductivity of electrons for the strongly correlated multi-component ion plasma expected in the outer layers of neutron star's crust employing a Path Integral Monte Carlo (PIMC) approach. This allows us to isolate…

高能天体物理现象 · 物理学 2016-07-20 Alessandro Roggero , Sanjay Reddy

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 study, we examine thermal conductivity and the thermal Hall effect in electron-ion plasmas relevant to hot neutron stars, white dwarfs, and binary neutron star mergers, focusing on densities found in the outer crusts of neutron…

高能天体物理现象 · 物理学 2024-11-18 Arus Harutyunyan , Armen Sedrakian

Recently, crust cooling times have been measured for neutron stars after extended outbursts. These observations are very sensitive to the thermal conductivity $\kappa$ of the crust and strongly suggest that $\kappa$ is large. We perform…

天体物理学 · 物理学 2009-11-13 C. J. Horowitz , O. L. Caballero , D. K. Berry

We examine nature of longitudinal electrical conductivity in magnetized electron-ion plasma in the context of binary neutron star mergers. In presence of strong magnetic field, high density and temperature, quantum oscillatory behaviour for…

高能物理 - 唯象学 · 物理学 2021-08-27 Sreemoyee Sarkar , Souvik Priyam Adhya

We calculate the thermal conductivity of electrons produced by electron-electron Coulomb scattering in a strongly degenerate electron gas taking into account the Landau damping of transverse plasmons. The Landau damping strongly reduces…

天体物理学 · 物理学 2009-11-11 P. S. Shternin , D. G. Yakovlev

We study the influence of positrons on the outer crusts of neutron stars and the interiors of white dwarfs, introducing them as a novel component in both the composition of matter and in transport processes. We solve a system of coupled…

高能天体物理现象 · 物理学 2026-03-20 Tigran Petrosyan , Arus Harutyunyan , Armen Sedrakian

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

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

This investigation explores the phononic thermal conductivity of nuclear star matter as it undergoes the "topological" transition to the "pasta" regime, and further down to the solid-liquid phase transition. The study was carried out using…

核理论 · 物理学 2020-05-20 Claudio Dorso , Jonathan Dunn , Alejandro Strachan , Guillermo Frank

We calculate the thermal conductivity of electrons and muons kappa_{e-mu} produced owing to electromagnetic interactions of charged particles in neutron star cores and show that these interactions are dominated by the exchange of transverse…

天体物理学 · 物理学 2008-12-18 P. S. Shternin , D. G. Yakovlev

Thermal and electric conductivities are calculated for degenerate electrons scattered by phonons in a crystal made of atomic nuclei. The exact phonon spectrum and the Debye--Waller factor are taken into account. Monte Carlo calculations are…

天体物理学 · 物理学 2007-05-23 D. A. Baiko , D. G. Yakovlev

We analyze the thermal conductivity of ions (equivalent to the conductivity of phonons in crystalline matter) in a neutron star envelope. We calculate the ion/phonon thermal conductivity in a crystal of atomic nuclei using variational…

天体物理学 · 物理学 2008-03-27 A. I. Chugunov , P. Haensel

We review the nuclear and condensed matter physics underlying the thermal and transport properties of the neutron star inner crust. These properties play a key role in interpreting transient phenomena such as thermal relaxation in accreting…

核理论 · 物理学 2012-01-27 Dany Page , Sanjay Reddy

The presence of nuclear pasta is expected to modify the transport properties in the mantle of neutron stars. The non-spherical geometry of the pasta nuclear clusters leads to anisotropies in the collision frequencies, impacting the thermal…

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