TL;DR
This paper explores the structure of neutron stars influenced by two distinct dark matter components, using a generalized three-fluid model and galaxy rotation curve data to understand their properties and gravitational redshift effects.
Contribution
It introduces a generalized three-fluid formalism to model neutron stars with double dark matter admixture and analyzes the impact of different dark matter equations of state.
Findings
Dark matter significantly affects neutron star structure.
Dark matter equations of state influence gravitational redshift.
Different dark matter contributions alter neutron star properties.
Abstract
The dark matter in neutron stars can exist from the lifetime of the progenitor or captured by this compact object. The properties of dark matter entered the neutron stars through each step could be different from each other. Here, we investigate the structure of neutron stars which are influenced by the dark matter in two processes. Applying a generalization of two-fluid formalism to three-fluid one and the equation of state from the rotational curves of galaxies, we explore the structure of double dark-matter admixed neutron stars. The behavior of the neutron and dark matter portions for these stars is considered. In addition, the influence of the dark matter equations of state on the stars with different contributions of visible and dark matter is studied. The gravitational redshift of these stars in different cases of dark matter equations of state is investigated.
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