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Related papers: The structure of accreted neutron star crust

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Exotic non-spherical configurations of nuclei, known as ``pasta" phases, are expected to be present at the bottom of the inner crust of a neutron star. We study the properties of these configurations in catalyzed neutron stars within a…

High Energy Astrophysical Phenomena · Physics 2022-06-17 H. Dinh Thi , A. F. Fantina , F. Gulminelli

We carry out a general-relativistic global linear stability analysis of the amassed carbon fuel on the surface of an accreting neutron star to determine the conditions under which superbursts occur. We reproduce the general observational…

Astrophysics · Physics 2009-11-10 Randall L. Cooper , Ramesh Narayan

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

We review and extend with nonrelativistic nuclear mean field calculations a previous study of the impact of the nuclear symmetry energy on the structure and composition of the outer crust of nonaccreting neutron stars. First, we develop a…

Nuclear Theory · Physics 2011-09-16 X. Roca-Maza , J. Piekarewicz , T. Garcia-Galvez , M. Centelles

This paper presents an investigation into the pycnonuclear reaction rates in dense crustal matter of neutron stars contaminated with strange quark matter nuggets. The presence of such nuggets in the crustal matter of neutron stars would be…

Solar and Stellar Astrophysics · Physics 2009-08-18 Barbara Golf , Joe Hellmers , Fridolin Weber

In the inner crust of a neutron star, at densities above the ``drip'' threshold, unbound ``conduction'' neutrons can move freely past through the ionic lattice formed by the nuclei. The relative current density $n^i= n \bar v^i$ of such…

Nuclear Theory · Physics 2009-11-10 Brandon Carter , Nicolas Chamel , Pawel Haensel

Formation and decay of rod-like and slab-like nuclei, as may be encountered in the outer parts of neutron stars, are examined within a zero-temperature stability analysis with respect to perturbations inducing fission and proton clustering.…

Nuclear Theory · Physics 2009-11-07 Kei Iida , Gentaro Watanabe , Katsuhiko Sato

Neutron stars cooling after sustained accretion outbursts provide unique information about the neutron star crust and underlying dense matter. Comparisons between astronomical observations of these cooling transients and model calculations…

High Energy Astrophysical Phenomena · Physics 2019-09-11 Sudhanva Lalit , Zach Meisel , Edward F. Brown

The glitch activity of young pulsars arises from the exchange of angular momentum between the crust and the interior of the star. Recently, it was inferred that the moment of inertia of the crust of a neutron star is not sufficient to…

General Relativity and Quantum Cosmology · Physics 2016-08-02 Kalin Staykov , K. Yavuz Ekşi , Stoytcho S. Yazadjiev , M. Metehan Türkoğlu , A. Savaş Arapoğlu

The monitoring of quiescent emission from neutron star transients with accretion outbursts long enough to significantly heat the neutron star crust has opened a new vista onto the physics of dense matter. In this paper we construct models…

Solar and Stellar Astrophysics · Physics 2011-02-11 Edward F. Brown , Andrew Cumming

Neutron stars serve as excellent next-generation thermal detectors of dark matter, heated by the scattering and annihilation of dark matter accelerated to relativistic speeds in their deep gravitational wells. However, the dynamics of…

High Energy Physics - Phenomenology · Physics 2020-03-24 Javier F. Acevedo , Joseph Bramante , Rebecca K. Leane , Nirmal Raj

We are investigating mass fractions on the crust of a neutron star which would remain after one year of cooling. We use cooling curves corresponding with various densities, or depths, of the neutron star just after its formation. We assume…

Astrophysics · Physics 2009-06-23 Kelsey L. Hoffman , Jeremy S. Heyl

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 nuclear pasta -- a novel state of matter having nucleons arranged in a variety of complex shapes -- is expected to be found in the crust of neutron stars and in core-collapse supernovae at subnuclear densities of about $10^{14}$…

Nuclear Theory · Physics 2016-08-16 C. J. Horowitz , M. A. Pérez-García , D. K. Berry , J. Piekarewicz

We present a systematic survey the range of predictions of the neutron star inner crust composition, crust-core transition densities and pressures, and density range of the nuclear `pasta' phases at the bottom of the crust provided by the…

Solar and Stellar Astrophysics · Physics 2015-05-30 W. G. Newton , M. Gearheart , Bao-An Li

The interior of a neutron star is expected to exhibit different states of matter. In particular, complex non-spherical configurations known as `pasta' phases may exist at the highest densities in the inner crust, potentially having an…

Nuclear Theory · Physics 2021-10-28 H. Dinh Thi , T. Carreau , A. F. Fantina , F. Gulminelli

We investigate constraints on neutron star structure arising from the assumptions that neutron stars have crusts, that recent calculations of pure neutron matter limit the equation of state of neutron star matter near the nuclear saturation…

High Energy Astrophysical Phenomena · Physics 2016-02-26 A. W. Steiner , J. M. Lattimer , E. F. Brown

In the present study we investigate the static properties of nuclei in the inner crust of neutron stars. Using the Hartree-Fock method in coordinate space, together with the semiclassical approximation, we examine the patterns of phase…

Nuclear Theory · Physics 2007-05-23 Piotr Magierski , Aurel Bulgac , Paul-Henri Heenen

We study the effects of an elastic crust on the oscillation spectrum of superfluid neutron stars. Within the two fluid formalism, we consider Newtonian stellar models that include the relevant constituents of a mature neutron stars. The…

Solar and Stellar Astrophysics · Physics 2015-05-28 A. Passamonti , N. Andersson

In this review article, we argue that our current understanding of the thermodynamic properties of cold QCD matter, originating from first principles calculations at high and low densities, can be used to efficiently constrain the…

Nuclear Theory · Physics 2016-04-20 Eduardo S. Fraga , Aleksi Kurkela , Aleksi Vuorinen
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