Strange magnetars admixed with fermionic dark matter

被引：11

作者：

Ferreira, Osvaldo ^{[1
]}

Fraga, Eduardo S. ^{[1
]}

机构：

[1] Univ Fed Rio de Janeiro, Inst Fis, Av Athos da Silveira Ramos 149, BR-21941909 Rio De Janeiro, Brazil

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2023年 / 04期

关键词：

neutron stars; magnetic fields; dark matter theory; FIELD; EQUATION; PULSAR; STARS; STATE;

D O I：

10.1088/1475-7516/2023/04/012

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss strange stars admixed with fermionic dark matter in the presence of a strong magnetic field using the two-fluid Tolman-Oppenheimer-Volkov equations. We describe strange quark matter using the MIT bag model and consider magnetic fields in the range ti 1017 - 1018 G. For the fermionic dark matter, we consider the cases of free particles and strongly self-interacting particles, with dark fermion masses m = 5,100, 500 GeV. We discuss the effects of dark matter and a strong magnetic field on the masses and radii of the stars, as well as on its tidal deformability. Even though strong magnetic fields contribute to decreasing the total mass of the star, they attenuate the rate of decrease in the maximum mass brought about by increasing the dark matter fraction in the admixed system. The most intensely affected observable, however, is the tidal deformability, with variations on the range of 70% - 90% for reasonable values of the magnetic field or dark matter central energy density.

引用

页数：22

共 91 条

[1] GW190425: Observation of a Compact Binary Coalescence with Total Mass ∼3.4 M⊙ [J].

Abbott, B. P. ;

Abbott, R. ;

Abbott, T. D. ;

Abraham, S. ;

Acernese, F. ;

Ackley, K. ;

Adams, C. ;

Adhikari, R. X. ;

Adya, V. B. ;

Affeldt, C. ;

Agathos, M. ;

Agatsuma, K. ;

Aggarwal, N. ;

Aguiar, O. D. ;

Aiello, L. ;

Ain, A. ;

Ajith, P. ;

Allen, G. ;

Allocca, A. ;

Aloy, M. A. ;

Altin, P. A. ;

Amato, A. ;

Anand, S. ;

Ananyeva, A. ;

Anderson, S. B. ;

Anderson, W. G. ;

Angelova, S. V. ;

Antier, S. ;

Appert, S. ;

Arai, K. ;

Araya, M. C. ;

Areeda, J. S. ;

Arene, M. ;

Arnaud, N. ;

Aronson, S. M. ;

Arun, K. G. ;

Ascenzi, S. ;

Ashton, G. ;

Aston, S. M. ;

Astone, P. ;

Aubin, F. ;

Aufmuth, P. ;

AultONeal, K. ;

Austin, C. ;

Avendano, V. ;

Avila-Alvarez, A. ;

Babak, S. ;

Bacon, P. ;

Badaracco, F. ;

Bader, M. K. M. .

ASTROPHYSICAL JOURNAL LETTERS, 2020, 892 (01)

[2] 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)

[3] Warming nuclear pasta with dark matter: kinetic and annihilation heating of neutron star crusts [J].

Acevedo, Javier F. ;

Bramante, Joseph ;

Leane, Rebecca K. ;

Raj, Nirmal .

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2020, (03)

[4] Tidal deformability of quark stars with repulsive interactions [J].

Albino, M. B. ;

Fariello, R. ;

Navarra, F. S. .

PHYSICAL REVIEW D, 2021, 104 (08)

[5] STRANGE STARS [J].

ALCOCK, C ;

FARHI, E ;

OLINTO, A .

ASTROPHYSICAL JOURNAL, 1986, 310 (01) :261-272

[6] Hybrid stars that masquerade as neutron stars [J].

Alford, M ;

Braby, M ;

Paris, M ;

Reddy, S .

ASTROPHYSICAL JOURNAL, 2005, 629 (02) :969-978

[7] Signatures for quark matter from multi-messenger observations [J].

Alford, Mark G. ;

Han, Sophia ;

Schwenzer, Kai .

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 2019, 46 (11)

[8] 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-+

[9] 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)

[10] 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

← 1 2 3 4 5 6 7 8 9 10 →