Zobrazeno 1 - 10
of 366
pro vyhledávání: '"Sedrakian, Armen"'
The (re)analysis of data on the X-ray emitting pulsars PSR J0030+0451 and PSR J0740+6620, as well as new results on PSR J0437-4715, are confronted with the predictions of the equation of state (EoS) models allowing for strong first-order phase transi
Externí odkaz:
http://arxiv.org/abs/2409.05322
Autor:
Harutyunyan, Arus, Sedrakian, Armen
Publikováno v:
Particles 7, 967-983 (2024)
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 stars and the
Externí odkaz:
http://arxiv.org/abs/2409.01304
Autor:
Sedrakian, Armen, Rau, Peter B.
We demonstrate that the interface between $S$-wave and $P$-wave paired superfluids in neutron stars induces a neutron supercurrent, akin to the Josephson junction effect in electronic superconductors. The proton supercurrent entrainment by the neutro
Externí odkaz:
http://arxiv.org/abs/2407.13686
Publikováno v:
Phys. Rev. D 110, L061303 (2024)
We study the bulk viscosity of moderately hot and dense, neutrino-transparent color superconducting quark matter arising from weak-interaction-driven direct URCA processes. The quark matter is modeled using the Nambu--Jona-Lasinio model improved to a
Externí odkaz:
http://arxiv.org/abs/2407.12493
Autor:
Sedrakian, Armen
Publikováno v:
Phys. Rev. Lett. 133, 171401 (2024)
Recent measurements of high-momentum correlated neutron-proton pairs at JLab suggest that the dense nucleonic component of the compact stars contains a fraction of high-momentum neutron-proton pairs that is not accounted for in the familiar Fermi-liq
Externí odkaz:
http://arxiv.org/abs/2406.16183
Publikováno v:
Eur. Phys. J. A (2024) 60:127
We construct tables of finite temperature equation of state (EoS) of hypernuclear matter in the range of densities, temperatures, and electron fractions that are needed for numerical simulations of supernovas, proto-neutron stars, and binary neutron
Externí odkaz:
http://arxiv.org/abs/2406.00484
Publikováno v:
Astrophys. J. 967, 116 (2024)
Recent astrophysical mass inferences of compact stars HESS J1731-347 and PSR J0952-0607, with extremely small and large masses respectively, as well as the measurement of the neutron skin of Ca in the CREX experiment challenge and constrain the model
Externí odkaz:
http://arxiv.org/abs/2401.02198
Publikováno v:
Nucl. Phys. B 1006 (2024) 116628
We show analytically that there exist compact stellar objects akin to neutron stars whose radius is smaller than the Schwarzschild radius defined by Arnowitt-Deser-Misner (ADM) mass. The radius of the compact object is defined by the radius where the
Externí odkaz:
http://arxiv.org/abs/2312.15839
Neutron stars may experience differential rotation on short, dynamical timescales following extreme astrophysical events like binary neutron star mergers. In this work, the masses and radii of differentially rotating neutron star models are computed.
Externí odkaz:
http://arxiv.org/abs/2311.09158
Publikováno v:
Physical Review C, Vol. 109, No. 5, 2024
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, involve pr
Externí odkaz:
http://arxiv.org/abs/2309.00893