The influence of magnetic field geometry in neutron stars' crustal oscillations

被引：0

作者：

de Souza, Gibran H. ^{[1
]}

Kemp, Ernesto ^{[1
]}

机构：

[1] Univ Estadual Campinas UNICAMP, Inst Fis Gleb Wataghin, BR-13083859 Sao Paulo, SP, Brazil

来源：

ASTRONOMISCHE NACHRICHTEN | 2019年 / 340卷 / 9-10期

关键词：

neutron stars; soft gamma repeaters; star oscillations; MATTER; EQUATION; STATE;

D O I：

10.1002/asna.201913715

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this work, we have studied oscillations in the crust of a neutron star whose magnetic field has both dipolar and toroidal components; the former extends from the stellar interior to the outer space, and the latter is confined inside the star radius. Our study is based on the solutions we have obtained for perturbations in the star fluid, confined to the crust thickness. Our results are compared to the frequencies observed in the soft gamma repeaters signals.

引用

页码：904 / 908

页数：5

共 11 条

[1] Equation of state of nucleon matter and neutron star structure [J].

Akmal, A ;

Pandharipande, VR ;

Ravenhall, DG .

PHYSICAL REVIEW C, 1998, 58 (03) :1804-1828

[2]

Becker W., 2009, ASTROPHYSICS SPACE S

[3] Stable magnetic fields in stellar interiors [J].

Braithwaite, J ;

Nordlund, Å .

ASTRONOMY & ASTROPHYSICS, 2006, 450 (03) :1077-1095

[4] Relativistic models of magnetars: structure and deformations [J].

Colaiuda, A. ;

Ferrari, V. ;

Gualtieri, L. ;

Pons, J. A. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2008, 385 (04) :2080-2096

[5] A unified equation of state of dense matter and neutron star structure [J].

Douchin, F ;

Haensel, P .

ASTRONOMY & ASTROPHYSICS, 2001, 380 (01) :151-167

[6] Magneto-elastic oscillations of neutron stars: exploring different magnetic field configurations [J].

Gabler, Michael ;

Cerda-Duran, Pablo ;

Font, Jose A. ;

Mueller, Ewald ;

Stergioulas, Nikolaos .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2013, 430 (03) :1811-1831

[7] Observational constraints on hyperons in neutron stars [J].

Lackey, BD ;

Nayyar, M ;

Owen, BJ .

PHYSICAL REVIEW D, 2006, 73 (02)

[8] NEUTRON STAR MATTER AT SUB-NUCLEAR DENSITIES [J].

NEGELE, JW ;

VAUTHERIN, D .

NUCLEAR PHYSICS A, 1973, A207 (02) :298-320

[9] THE McGILL MAGNETAR CATALOG [J].

Olausen, S. A. ;

Kaspi, V. M. .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2014, 212 (01)

[10] Torsional oscillations of relativistic stars with dipole magnetic fields [J].

Sotani, H. ;

Kokkotas, K. D. ;

Stergioulas, N. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2007, 375 (01) :261-277

← 1 2 →