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Description of nuclear matter in the core of neutron stars eludes the main tools of investigation of QCD, such as perturbation theory and the lattice formulation of the theory. Recently, the application of the holographic paradigm (both via…

High Energy Physics - Phenomenology · Physics 2023-01-11 Lorenzo Bartolini , Sven Bjarke Gudnason , Josef Leutgeb , Anton Rebhan

We investigate the global structures of neutron stars within the framework of general relativity, treating the entire star as a quantum-degenerate system. Rather than relying on the Tolman-Oppenheimer-Volkoff (TOV) equation, we solve the…

General Relativity and Quantum Cosmology · Physics 2024-12-05 Naoki Onishi

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 <…

Astrophysics · Physics 2007-05-23 D. A. Baiko , D. G. Yakovlev

The inner crust of neutron stars consists of nuclei of various shapes immersed in a neutron gas and stabilized by the Coulomb interaction in the form of a crystal lattice. The scattering of neutrons on nuclear inhomegeneities leads to the…

Nuclear Theory · Physics 2009-11-07 Piotr Magierski , Aurel Bulgac , Paul-Henri Heenen

We show that, in order to determine the equation of state of the inner crust of an accreting neutron star, one should minimize not the Gibbs free energy, as it is generally assumed in the literature, but a different thermodynamic potential…

High Energy Astrophysical Phenomena · Physics 2023-10-02 Mikhail E. Gusakov , Elena M. Kantor , Andrey I. Chugunov

The goal of this paper is to investigate properties of clusterized nuclear matter which is believed to be present in crusts of neutron stars at subnuclear densities. It is assumed that the whole system can be represented by the set of…

Nuclear Theory · Physics 2018-04-04 Claudio Ebel , Thomas J. Bürvenich , Igor Mishustin

We have investigated some of the properties of dense sub-nuclear matter at the crustal region (both the outer crust and the inner crust region) of a magnetar. The relativistic version of Thomas-Fermi (TF) model is used in presence of strong…

Solar and Stellar Astrophysics · Physics 2010-05-18 Nandini Nag , Sutapa Ghosh , Somenath Chakrabarty

Superfluid properties of the inner crust matter of neutron stars, formed by nuclear clusters immersed in a dilute neutron gas, are analysed in a self- consistent HFB approach. The calculations are performed with two pairing forces, fixed so…

Nuclear Theory · Physics 2009-11-10 N. Sandulescu , Nguyen Van Giai , R. J. Liotta

We perform a self-consistent calculation of the thermal structure in the crust of a superbursting neutron star. In particular, we follow the nucleosynthetic evolution of an accreted fluid element from its deposition into the atmosphere down…

Astrophysics · Physics 2011-02-11 Sanjib Gupta , Edward F. Brown , Hendrik Schatz , Peter Moeller , Karl-Ludwig Kratz

The geometric contribution to the superfluid density has been found to be of great importance in the inner crust of neutron stars. In this work we clarify how this contribution arises in the context of a band theory for neutrons.…

Nuclear Theory · Physics 2026-03-06 Giorgio Almirante

The mass, radius and crustal fraction of moment of inertia in neutron stars are calculated using $\beta$-equilibrated nuclear matter obtained from Skyrme effective interaction. The transition density, pressure and proton fraction at the…

Nuclear Theory · Physics 2017-07-18 K. Madhuri , D. N. Basu , T. R. Routray , S. P. Pattnaik

The modern nucleon-nucleon interaction of Myers and Swiatecki, adjusted to the properties of finite nuclei, the parameters of the mass formula, and the behavior of the optical potential is used to calculate the properties of…

Nuclear Theory · Physics 2009-10-30 Klaus Strobel , Fridolin Weber , Manfred K. Weigel , Christoph Schaab

Stability of nuclei beyond the drip lines in the presence of an enveloping gas of nucleons and electrons, as prevailing in the inner crust of a neutron star, is studied in the temperature-dependent Thomas-Fermi framework. A limiting…

Nuclear Theory · Physics 2009-11-07 Tapas Sil , J. N. De , S. K. Samaddar , X. Vinas , M. Centelles , B. K. Agrawal , S. K. Patra

The structure of a vortex in the inner crust of neutron stars is calculated within the framework of quantum mean field theory taking into account the interaction with the nuclei composing the Coulomb lattice. Making use of the results…

Astrophysics · Physics 2009-06-23 P. Avogadro , F. Barranco , R. A. Broglia , E. Vigezzi

The boundary between the solid crust, assumed to be in complete thermodynamic equilibrium (cold catalyzed matter), and the liquid core of a neutron star is studied using Skyrme SLy effective N-N interactions. An approximate value of the…

Astrophysics · Physics 2009-10-31 F. Douchin , P. Haensel

The equilibrium properties of the outer crust of cold nonaccreting magnetars (i.e. neutron stars endowed with very strong magnetic fields) are studied using the latest experimental atomic mass data complemented with a microscopic atomic…

High Energy Astrophysical Phenomena · Physics 2013-05-03 N. Chamel , R. L. Pavlov , L. M. Mihailov , Ch. J. Velchev , Zh. K. Stoyanov , Y. D. Mutafchieva , M. D. Ivanovich , J. M. Pearson , S. Goriely

We previously studied the inner crust and the pasta mantle of a neutron star within the 4th-order extended Thomas-Fermi (ETF) approach with consistent proton shell corrections added perturbatively via the Strutinsky integral (SI) theorem…

High Energy Astrophysical Phenomena · Physics 2024-05-07 N. N. Shchechilin , N. Chamel , J. M. Pearson , A. I. Chugunov , A. Y. Potekhin

The interaction between nuclei in the inner crust of neutron stars consists of two contributions, the so-called "direct" interaction and an "induced" one due to density changes in the neutron fluid. For large nuclear separations $r$ the…

Nuclear Theory · Physics 2017-03-02 D. Kobyakov , C. J. Pethick

Extending the Kruppa's prescription for the continuum level density, we have recently improved the BCS method with seniority-type pairing force in such a way that the effects of discretized unbound states are properly taken into account for…

Nuclear Theory · Physics 2014-11-21 Toshiya Ono , Yoshifumi R. Shimizu , Naoki Tajima , Satoshi Takahara

A microscopic, quantum mechanical model for neutron vortices in the crust of a neutron star is presented. After a brief introduction to the Bogoliubov- de Gennes equations, which form the basis for our calculations, we present results for…

Astrophysics · Physics 2009-11-06 O. Elgaroy , F. V. De Blasio
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