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By means of Monte Carlo methods, we perform a full error analysis on the Duflo-Zucker mass model. In particular, we study the presence of correlations in the residuals to obtain a more realistic estimate of the error bars on the predicted…

核理论 · 物理学 2020-03-25 A. Pastore , D. Neill , H. Powell , K. Medler , C. Barton

The equation of state of the neutron-star outer crust is sensitive to nuclear mass predictions and provides a direct connection to properties of nuclei throughout the nuclide map, including those beyond experimental reach. We quantify the…

核理论 · 物理学 2026-05-12 P. S. Koliogiannis , N. Paar

A very fast iterative method is presented to calculate the internal constitution of the outer crust of a cold nonaccreted neutron star, making use of very accurate analytical formulas for the transition pressures between adjacent crustal…

高能天体物理现象 · 物理学 2020-05-25 Nicolas Chamel

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…

核理论 · 物理学 2011-09-16 X. Roca-Maza , J. Piekarewicz , T. Garcia-Galvez , M. Centelles

The composition and equation of state of the outer crust of non-accreting neutron stars is computed using accurate nuclear mass tables. The main goal of the present study is to understand the impact of the symmetry energy on the structure…

核理论 · 物理学 2008-11-26 X. Roca-Maza , J. Piekarewicz

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…

核理论 · 物理学 2021-10-28 H. Dinh Thi , T. Carreau , A. F. Fantina , F. Gulminelli

The effects of the existence of exotic nuclear shapes at the bottom of the neutron star inner crust - nuclear `pasta' - on observational phenomena are estimated by comparing the limiting cases that those phases have a vanishing shear…

太阳与恒星天体物理 · 物理学 2015-05-28 M. Gearheart , W. G. Newton , J. Hooker , Bao-An Li

Measurements of neutron-star macrophysical properties thanks to multimessenger observations offer the possibility to constrain the properties of nuclear matter. Indeed cold and dense matter as found inside neutron stars, in particular in…

高能天体物理现象 · 物理学 2021-07-09 Lami Suleiman , Morgane Fortin , Julian Leszek Zdunik , Pawel Haensel

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…

高能天体物理现象 · 物理学 2022-06-17 H. Dinh Thi , A. F. Fantina , F. Gulminelli

The structure of the crust of a neutron star is completely determined by the experimentally measured nuclear masses up to a density of the order of 10^11 g.cm^{-3}. At higher densities, the composition of the crust still remains uncertain,…

核理论 · 物理学 2008-11-26 Nicolas Chamel

Nuclear pasta, that is an inhomogeneous distribution of nuclear matter characterised by non-spherical clustered structures, is expected to occur in a narrow spatial region at the bottom of the inner crust of neutron stars, but the width of…

高能天体物理现象 · 物理学 2021-11-09 H. Dinh Thi , A. F. Fantina , F. Gulminelli

The properties and composition of the outer crust of nonaccreting cold neutron stars are studied by applying the model of Baym, Pethick, and Sutherland, which was extended by including higher order corrections of the atomic binding,…

天体物理学 · 物理学 2008-11-26 Matthias Hempel , Jurgen Schaffner-Bielich

The properties of the outer crust of non-accreting cold neutron stars are studied by using modern nuclear data and theoretical mass tables updating in particular the classic work of Baym, Pethick and Sutherland. Experimental data from the…

天体物理学 · 物理学 2008-11-26 Stefan B. Ruester , Matthias Hempel , Jurgen Schaffner-Bielich

A fully self-consistent model of the neutron star inner crust based upon models of the nucleonic equation of state at zero temperature is constructed. The results nearly match those of previous calculations of the inner crust given the same…

核理论 · 物理学 2008-11-26 Andrew W. Steiner

The outer layers of a neutron star are supposed to be formed of a solid Coulomb lattice of neutron rich nuclei. At densities above neutron drip density (about one thousandth of nuclear saturation density), this lattice is immersed in a…

核理论 · 物理学 2009-11-10 Nicolas Chamel

By using a machine learning algorithms, we present an improved nuclear mass table with a root mean square deviation of less than $200$\.keV. The model is equipped with statistical error bars in order to compare with available experimental…

核理论 · 物理学 2021-04-01 M. Shelley , A. Pastore

The composition of the inner crust of neutron stars is usually studied using phenomenological interactions such as Skyrme energy-density functionals. But most of these functionals do not agree well with ab-initio calculations of very dilute…

核理论 · 物理学 2024-04-10 Sunny Kumar Gupta , Michael Urban

I construct a model of the inner crust of neutron stars using interactions from chiral effective field theory (EFT) in order to calculate its equation of state (EOS), shear properties, and the spectrum of crustal shear modes. I…

核理论 · 物理学 2017-01-19 Ingo Tews

We perform a systematic comparison between the results obtained by solving fully self-consistently the Hartree-Fock-Bogoliubov equations, and those obtained using the semi-classical Extended Thomas-Fermi method, for various Wigner-Seitz…

核理论 · 物理学 2020-12-09 Matthew Shelley , Alessandro Pastore

We investigate the inner crust structure of neutron stars using the Skyrme-Hartree-Fock approach with the Coulomb interaction treated beyond the Wigner-Seitz approximation. Our results suggest that the shell effects associated with unbound…

核理论 · 物理学 2009-11-07 Piotr Magierski , Paul-Henri Heenen
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