Tidal deformability of strange quark planets and strange dwarfs

Wang, Xu; Kuerban, Abudushataer; Geng, Jin-Jun; Xu, Fan; Zhang, Xiaoli; Zuo, Bing-Jun; Yuan, Wen-Li; Huang, Yun‐Feng

doi:10.1103/physrevd.104.123028

Cited by 11 publications

(5 citation statements)

References 52 publications

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“…Tidal deformability of strange quark stars have been discussed in a number of previous papers [87][88][89][90] where the impact of interactions, the self-bound character of the EoS, and even the presence of dark matter were considered. Here we focus on the role played by both the magnetic field and dark matter on the resulting tidal deformability.…”

Section: Jcap04(2023)012 5 Results For the Tidal Deformabilitymentioning

confidence: 99%

Strange magnetars admixed with fermionic dark matter

Ferreira

Fraga

2023

J. Cosmol. Astropart. Phys.

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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 ∼ 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.

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Section: Jcap04(2023)012 5 Results For the Tidal Deformabilitymentioning

confidence: 99%

Strange magnetars admixed with fermionic dark matter

Ferreira

Fraga

2023

J. Cosmol. Astropart. Phys.

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“…GWs at kilohertz are a promising tool to probe the compact star structure and the dense matter equation of state [39]. Inspirals of compact binaries can give novel insights into the study of exotic strange quark matter objects [26,[40][41][42][43]. GW signals from compact star seismology can also place constraints on the strange star properties.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Gravitational Waves from Strange Star Core-Crust Oscillation

Ze-Cheng¹,

Huang²,

Zhang³

2022

Preprint

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“…GWs at kilohertz are a promising tool when it comes to probing the compact star structure and the dense matter equation of state [49]. Inspirals of compact binaries can give novel insights into the study of exotic strange quark matter objects [25][26][27][28]36]. GW signals from compact star seismology can also place constraints on the strange star properties.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

“…The compactness criterion also stands for strange dwarfs, which distinguish themselves from white dwarfs by their smaller radii [24]. GWs from binary systems consisting of strange planets or strange dwarfs are detectable [25][26][27], and could carry valuable information on their tidal deformability [28].…”

Section: Introductionmentioning

confidence: 99%

Gravitational Waves from Strange Star Core–Crust Oscillation

2022

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According to the strange quark matter hypothesis, pulsars may actually be strange stars composed of self-bound strange quark matter. The normal matter crust of a strange star, unlike that of a normal neutron star, is supported by a strong electric field. A gap is then presented between the crust and the strange quark core. Therefore, peculiar core–crust oscillation may occur in a strange star, which can produce distinctive gravitational waves. In this paper, the waveforms of such gravitational waves are derived using a rigid model. We find that the gravitational waves are extremely weak and undetectable, even for the next-generation detectors. Therefore, the seismology of a strange star is not affected by the core–crust oscillation. Observers will have to search for other effects to diagnose the existence of the crust.

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Tidal deformability of strange quark planets and strange dwarfs

Cited by 11 publications

References 52 publications

Strange magnetars admixed with fermionic dark matter

Strange magnetars admixed with fermionic dark matter

Gravitational Waves from Strange Star Core-Crust Oscillation

Gravitational Waves from Strange Star Core–Crust Oscillation

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