Comprehensive study of compact stars with dark matter

Barbat, Mikel F.; Schaffner-Bielich, Jürgen; Tolos, Laura

doi:10.1103/physrevd.110.023013

Phys. Rev. D

2024

DOI: 10.1103/physrevd.110.023013

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Comprehensive study of compact stars with dark matter

Mikel F. Barbat,

Jürgen Schaffner-Bielich,

Laura Tolos

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2024

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Cited by 2 publications

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Color-flavor locked strange stars admixed with mirror dark matter and the observations of compact stars

Yang,

2024

J. Cosmol. Astropart. Phys.

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We investigate the structure and the tidal deformability of the color-flavor locked strange stars admixed with mirror dark matter. Assuming the stars in the GW170817 event have a mirror-dark-matter core or a mirror-dark-matter halo, the observations of the central compact object within the supernova remnant HESS J1731-347 and the compact objects in the GW190814 and GW170817 events could be explained simultaneously with a pairing gap much smaller than 200 MeV. In contrast, a pairing gap larger than about 200 MeV must be employed without the consideration of a mirror-dark-matter core (halo). More importantly, we find that for the case of the quartic coefficient a 4 < 0.589, if the mass fraction of the mirror dark matter (fD ) of the compact stars in GW170817 is in a certain range (eg., 22.8% < fD < 77.2% for a 4 = 0.55), the minimum allowed value of the pairing gap could be less than 46.5 MeV (i.e., one half of the value of the strange quark mass which is taken as 93 MeV in this paper), which leads to the result that all astrophysical observations mentioned above could be satisfied without violating the conformal bound or the recently proposed positive trace anomally bound.

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Color-flavor locked strange stars admixed with mirror dark matter and the observations of compact stars

Yang,

2024

J. Cosmol. Astropart. Phys.

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Radial mode stability of two-fluid neutron stars

Caballero,

Ripley,

Yunes

2024

Phys. Rev. D

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Comprehensive study of compact stars with dark matter

Cited by 2 publications

References 91 publications

Color-flavor locked strange stars admixed with mirror dark matter and the observations of compact stars

Color-flavor locked strange stars admixed with mirror dark matter and the observations of compact stars

Radial mode stability of two-fluid neutron stars

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