97 citations · 503 across the 25 of their papers we have counts for
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Impact of positrons on electrical conductivity of hot and dense astrophysical plasma
Tigran Petrosyan, Arus Harutyunyan, Armen Sedrakian
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…
Thermal conduction and thermopower of a warm neutron star crust in magnetic fields
Henrik Danielyan, Arus Harutyunyan, Armen Sedrakian
We compute the thermal conductivity and thermopower of the inner crust of compact stars over a broad temperature-density domain relevant to proto-neutron stars, binary neutron-star…
Thermal Conductivity and Thermal Hall Effect in Dense Electron-Ion Plasma
Arus Harutyunyan, Armen Sedrakian
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, foc…
Electrical conductivity of warm neutron star crust in magnetic fields: Neutron-drip regime
Arus Harutyunyan, Armen Sedrakian, Narine T. Gevorgyan +1
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…
Bulk Viscosity of Relativistic Matter in Neutron-Star Mergers
Mark Alford, Arus Harutyunyan, Armen Sedrakian
We discuss the bulk viscosity of hot and dense matter arising from weak-interaction direct Urca processes. We consider two regimes of interest: (a) the neutrino-transparent…
Bulk viscosity from Urca processes: matter in the neutrino-trapped regime
Mark Alford, Arus Harutyunyan, Armen Sedrakian
In this work, we extend our previous study of the bulk viscosity of hot and dense matter induced by the Urca processes in the neutrino trapped regime to matter by addi…
On the importance of resistivity and Hall effect in MHD simulations of binary neutron star mergers
Arus S. Harutyunyan
We examine the range of rest-mass densities, temperatures and magnetic fields involved in simulations of binary neutron star mergers (BNSM) and identify the conditions under which…
Bulk viscosity of baryonic matter with trapped neutrinos
Mark Alford, Arus Harutyunyan, Armen Sedrakian
We study bulk viscosity arising from weak current Urca processes in dense baryonic matter at and beyond nuclear saturation density. We consider the temperature regime where neutrin…
Electrical Resistivity and Hall Effect in Binary Neutron-Star Mergers
Arus Harutyunyan, Antonios Nathanail, Luciano Rezzolla +1
We examine the range of rest-mass densities, temperatures and magnetic fields involved in simulations of binary neutron-star mergers and identify the conditions under which the ide…
Electrical conductivity tensor of dense plasma in magnetic fields
Arus Harutyunyan, Armen Sedrakian
Electrical conductivity of finite-temperature plasma in neutron star crusts is studied for applications in magneto-hydrodynamical description of compact stars. We solve the Boltzma…
Electrical conductivity of a warm neutron star crust in magnetic fields
Arus Harutyunyan, Armen Sedrakian
We study the electrical conductivity of finite-temperature crust of a warm compact star which may be formed in the aftermath of a supernova explosion or a binary neutron star merge…