Effects of the symmetry energy on properties of neutron star crusts near the neutron drip density

被引：55

作者：

Bao, S. S. ^{[1
]}

Hu, J. N. ^{[1
]}

Zhang, Z. W. ^{[1
]}

Shen, H. ^{[1
]}

机构：

[1] Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China

来源：

PHYSICAL REVIEW C | 2014年 / 90卷 / 04期

基金：

中国国家自然科学基金;

关键词：

EQUATION-OF-STATE; MEAN-FIELD-THEORY; CURVATURE PROPERTIES; NUCLEAR-SURFACE; MATTER; PHYSICS; HOT;

D O I：

10.1103/PhysRevC.90.045802

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：

We study the effects of the symmetry energy on the neutron drip density and properties of nuclei in neutron star crusts. The nonuniform matter around the neutron drip point is calculated by using the Thomas-Fermi approximation with the relativistic mean-field model. The neutron drip density and the composition of the crust are found to be correlated with the symmetry energy and its slope. We compare the self-consistent Thomas-Fermi approximation with other treatments of surface and Coulomb energies and find that these finite-size effects play an essential role in determining the equilibrium state at low density.

引用

页数：14

共 43 条

[1] Nuclear "pasta" phase within density dependent hadronic models [J].

Avancini, S. S. ;

Brito, L. ;

Marinelli, J. R. ;

Menezes, D. P. ;

de Moraes, M. M. W. ;

Providencia, C. ;

Santos, A. M. .

PHYSICAL REVIEW C, 2009, 79 (03)

[2] Warm and cold pasta phase in relativistic mean field theory [J].

Avancini, S. S. ;

Menezes, D. P. ;

Alloy, M. D. ;

Marinelli, J. R. ;

Moraes, M. M. W. ;

Providencia, C. .

PHYSICAL REVIEW C, 2008, 78 (01)

[3] Warm "pasta" phase in the Thomas-Fermi approximation [J].

Avancini, Sidney S. ;

Chiacchiera, Silvia ;

Menezes, Debora P. ;

Providencia, Constanca .

PHYSICAL REVIEW C, 2010, 82 (05)

[4] Influence of the symmetry energy on nuclear "pasta" in neutron star crusts [J].

Bao, S. S. ;

Shen, H. .

PHYSICAL REVIEW C, 2014, 89 (04)

[5] NEUTRON STAR MATTER [J].

BAYM, G ;

BETHE, HA ;

PETHICK, CJ .

NUCLEAR PHYSICS A, 1971, A175 (02) :225-&

[6] Low-mass neutron stars and the equation of state of dense matter [J].

Carriere, J ;

Horowitz, CJ ;

Piekarewicz, J .

ASTROPHYSICAL JOURNAL, 2003, 593 (01) :463-471

[7] Neutron star properties and the symmetry energy [J].

Cavagnoli, Rafael ;

Menezes, Debora P. ;

Providencia, Constanca .

PHYSICAL REVIEW C, 2011, 84 (06)

[8] Thomas-Fermi theory for atomic nuclei revisited [J].

Centelles, M. ;

Schuck, P. ;

Vinas, X. .

ANNALS OF PHYSICS, 2007, 322 (02) :363-396

[9] Origin of the neutron skin thickness of 208Pb in nuclear mean-field models [J].

Centelles, M. ;

Roca-Maza, X. ;

Vinas, X. ;

Warda, M. .

PHYSICAL REVIEW C, 2010, 82 (05)

[10] Semiclassical treatment of asymmetric semi-infinite nuclear matter: surface and curvature properties in relativistic and non-relativistic models [J].

Centelles, M ;

Del Estal, M ;

Vinas, X .

NUCLEAR PHYSICS A, 1998, 635 (1-2) :193-230

← 1 2 3 4 5 →