Anisotropic Dark Matter Stars

Moraes, Pedro H. R. S.; Panotopoulos, Grigoris; Lopes, Ilidio

doi:10.48550/arxiv.2101.02207

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Equation-of-state and Anisotropic Profile1

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2021

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“…In this section we motivate the expressions of the equation-of state (EoS) as well as of the form of the factor of anisotropy considered in the present work, following closely [62].…”

Section: Equation-of-state and Anisotropic Profilementioning

confidence: 99%

Tidal deformability and radial oscillations of anisotropic polytropic spheres

Arbañil,

Panotopoulos

2021

Preprint

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We compute the equilibrium, the fundamental eigenfrequency of oscillations modes, and quadrupolar tidal deformability of anisotropic polytropic spheres. These studies are respectively performed through the numerical solution of the Tolman-Oppenheimer-Volkoff equation, Chandrasekhar radial oscillation equations, and nonlinear first-order Riccati equation for tidal deformability, all modified from their original version to include the anisotropic effects. For the polytropic exponent γ = 2 and the anisotropic model of Cattoen, Faber, and Visser, we show that the anisotropy could be reflected in the radial pressure, energy density, speed of sound, radial stability, and tidal deformability.

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“…In this section we motivate the expressions of the equation-of state (EoS) as well as of the form of the factor of anisotropy considered in the present work, following closely [62].…”

Section: Equation-of-state and Anisotropic Profilementioning

confidence: 99%