Inner crust of neutron stars with mass-fitted Skyrme functionals

被引：119

作者：

Pearson, J. M. ^{[1
]}

Chamel, N. ^{[2
]}

Goriely, S. ^{[2
]}

Ducoin, C. ^{[3
,4
]}

机构：

[1] Univ Montreal, Dept Phys, Montreal, PQ H3C 3J7, Canada

[2] Univ Libre Bruxelles, Inst Astron & Astrophys, B-1050 Brussels, Belgium

[3] Univ Coimbra, CFC, Dept Phys, P-3004516 Coimbra, Portugal

[4] Univ Lyon 1, CNRS, Inst Phys Nucl Lyon, IN2P3, F-69622 Villeurbanne, France

来源：

PHYSICAL REVIEW C | 2012年 / 85卷 / 06期

关键词：

EQUATION-OF-STATE; MATTER; PHYSICS; NUCLEI;

D O I：

10.1103/PhysRevC.85.065803

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The equation of state and composition of the inner crust of neutron stars at zero temperature are calculated, using the T = 0 version of the temperature-dependent extended Thomas-Fermi plus Strutinsky integral method, for each of a family of three functionals based on Skyrme-type forces BSk19, BSk20, and BSk21, which are characterized by different degrees of symmetry-energy stiffness, and also for the SLy4 functional. We also solve the Tolman-Oppenheimer-Volkoff equations to calculate the distribution of mass within the inner crust. Qualitatively similar results are found for all four functionals, and in particular the number of protons per Wigner-Seitz cell is in all cases equal to 40 throughout the inner crust.

引用

页数：12

共 39 条

[1] COLD EQUATION OF STATE FROM THOMAS-FERMI-DIRAC-WEIZSACKER THEORY [J].

ABRAHAMS, AM ;

SHAPIRO, SL .

PHYSICAL REVIEW A, 1990, 42 (05) :2530-2538

[2] The AME2003 atomic mass evaluation (II). Tables, graphs and references [J].

Audi, G ;

Wapstra, AH ;

Thibault, C .

NUCLEAR PHYSICS A, 2003, 729 (01) :337-676

[3] SELFCONSISTENT SEMICLASSICAL DESCRIPTION OF AVERAGE NUCLEAR PROPERTIES - A LINK BETWEEN MICROSCOPIC AND MACROSCOPIC MODELS [J].

BRACK, M ;

GUET, C ;

HAKANSSON, HB .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1985, 123 (05) :275-364

[4] A skyrme parametrization from subnuclear to neutron star densities - Part II. Nuclei far from stabilities [J].

Chabanat, E ;

Bonche, P ;

Haensel, P ;

Meyer, J ;

Schaeffer, R .

NUCLEAR PHYSICS A, 1998, 635 (1-2) :231-256

[5]

Chabanat E, 1998, NUCL PHYS A, V643, P441

[6] Validity of the Wigner-Seitz approximation in neutron star crust [J].

Chamel, N. ;

Naimi, S. ;

Khan, E. ;

Margueron, J. .

PHYSICAL REVIEW C, 2007, 75 (05)

[7] Masses of neutron stars and nuclei [J].

Chamel, N. ;

Fantina, A. F. ;

Pearson, J. M. ;

Goriely, S. .

PHYSICAL REVIEW C, 2011, 84 (06)

[8] Spin and spin-isospin instabilities in asymmetric nuclear matter at zero and finite temperatures using Skyrme functionals [J].

Chamel, N. ;

Goriely, S. .

PHYSICAL REVIEW C, 2010, 82 (04)

[9] Effective contact pairing forces from realistic calculations in infinite homogeneous nuclear matter [J].

Chamel, N. .

PHYSICAL REVIEW C, 2010, 82 (01)

[10] Further explorations of Skyrme-Hartree-Fock-Bogoliubov mass formulas. XI. Stabilizing neutron stars against a ferromagnetic collapse [J].

Chamel, N. ;

Goriely, S. ;

Pearson, J. M. .

PHYSICAL REVIEW C, 2009, 80 (06)

← 1 2 3 4 →