Radial oscillations in neutron stars from QCD

被引：10

作者：

Jimenez, Jose C. ^{[1
]}

Fraga, Eduardo S. ^{[2
]}

机构：

[1] Univ Sao Paulo, Inst Fis, Rua Matao 1371, BR-05508090 Sao Paulo, Brazil

[2] Univ Fed Rio de Janeiro, Inst Fis, Caixa Postal 68528, BR-21941972 Rio De Janeiro, RJ, Brazil

来源：

PHYSICAL REVIEW D | 2021年 / 104卷 / 01期

基金：

巴西圣保罗研究基金会;

关键词：

EQUATION-OF-STATE; MATTER; PULSATIONS; MASS; INSTABILITY; STABILITY; MODES;

D O I：

10.1103/PhysRevD.104.014002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the stability against infinitesimal radial oscillations of neutron stars generated by a set of equations of state obtained from first-principle calculations in cold and dense QCD and constrained by observational data. We consider mild and large violations of the conformal bound, c(s) = 1/root 3, in stars that can possibly contain a quark matter core. Some neutron star families in the mass-radius diagram become dynamically unstable due to large oscillation amplitudes near the core.

引用

页数：8

共 47 条

[1] GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral [J].

Abbott, B. P. ;

Abbott, R. ;

Abbott, T. D. ;

Acernese, F. ;

Ackley, K. ;

Adams, C. ;

Adams, T. ;

Addesso, P. ;

Adhikari, R. X. ;

Adya, V. B. ;

Affeldt, C. ;

Afrough, M. ;

Agarwal, B. ;

Agathos, M. ;

Agatsuma, K. ;

Aggarwal, N. ;

Aguiar, O. D. ;

Aiello, L. ;

Ain, A. ;

Ajith, P. ;

Allen, B. ;

Allen, G. ;

Allocca, A. ;

Altin, P. A. ;

Amato, A. ;

Ananyeva, A. ;

Anderson, S. B. ;

Anderson, W. G. ;

Angelova, S. V. ;

Antier, S. ;

Appert, S. ;

Arai, K. ;

Araya, M. C. ;

Areeda, J. S. ;

Arnaud, N. ;

Arun, K. G. ;

Ascenzi, S. ;

Ashton, G. ;

Ast, M. ;

Aston, S. M. ;

Astone, P. ;

Atallah, D. V. ;

Aufmuth, P. ;

Aulbert, C. ;

AultONeal, K. ;

Austin, C. ;

Avila-Alvarez, A. ;

Babak, S. ;

Bacon, P. ;

Bader, M. K. M. .

PHYSICAL REVIEW LETTERS, 2017, 119 (16)

[2] 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

[3] Astrophysics -: Quark matter in compact stars? [J].

Alford, M. ;

Blaschke, D. ;

Drago, A. ;

Klaehn, T. ;

Pagliara, G. ;

Schaffner-Bielich, J. .

NATURE, 2007, 445 (7125) :E7-E8

[4] Evidence for quark-matter cores in massive neutron stars [J].

Annala, Eemeli ;

Gorda, Tyler ;

Kurkela, Aleksi ;

Nattila, Joonas ;

Vuorinen, Aleksi .

NATURE PHYSICS, 2020, 16 (09) :907-+

[5] Gravitational-Wave Constraints on the Neutron-Star-Matter Equation of State [J].

Annala, Eemeli ;

Gorda, Tyler ;

Kurkela, Aleksi ;

Vuorinen, Aleksi .

PHYSICAL REVIEW LETTERS, 2018, 120 (17)

[6] A Massive Pulsar in a Compact Relativistic Binary [J].

Antoniadis, John ;

Freire, Paulo C. C. ;

Wex, Norbert ;

Tauris, Thomas M. ;

Lynch, Ryan S. ;

van Kerkwijk, Marten H. ;

Kramer, Michael ;

Bassa, Cees ;

Dhillon, Vik S. ;

Driebe, Thomas ;

Hessels, Jason W. T. ;

Kaspi, Victoria M. ;

Kondratiev, Vladislav I. ;

Langer, Norbert ;

Marsh, Thomas R. ;

McLaughlin, Maura A. ;

Pennucci, Timothy T. ;

Ransom, Scott M. ;

Stairs, Ingrid H. ;

van Leeuwen, Joeri ;

Verbiest, Joris P. W. ;

Whelan, David G. .

SCIENCE, 2013, 340 (6131) :448

[7] Equation of state in (2+1)-flavor QCD [J].

Bazavov, A. ;

Bhattacharya, Tanmoy ;

DeTar, C. ;

Ding, H. -T. ;

Gottlieb, Steven ;

Gupta, Rajan ;

Hegde, P. ;

Heller, U. M. ;

Karsch, F. ;

Laermann, E. ;

Levkova, L. ;

Mukherjee, Swagato ;

Petreczky, P. ;

Schmidt, C. ;

Schroeder, C. ;

Soltz, R. A. ;

Soeldner, W. ;

Sugar, R. ;

Wagner, M. ;

Vranas, P. .

PHYSICAL REVIEW D, 2014, 90 (09)

[8] Sound Velocity Bound and Neutron Stars [J].

Bedaque, Paulo ;

Steiner, Andrew W. .

PHYSICAL REVIEW LETTERS, 2015, 114 (03)

[9] ON A STATIC CRITERION FOR STABILITY OF EQUILIBRIUM [J].

CALAMAI, G .

ASTROPHYSICS AND SPACE SCIENCE, 1970, 8 (01) :53-&

[10] Stringent constraints on neutron-star radii from multimessenger observations and nuclear theory [J].

Capano, Collin D. ;

Tews, Ingo ;

Brown, Stephanie M. ;

Margalit, Ben ;

De, Soumi ;

Kumar, Sumit ;

Brown, Duncan A. ;

Krishnan, Badri ;

Reddy, Sanjay .

NATURE ASTRONOMY, 2020, 4 (06) :625-632

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