Unified dark fluid in Brans–Dicke theory [PDF]
The European Physical Journal C, 2014 Anisotropic dark energy cosmological models are constructed in the frame work of generalised Brans–Dicke theory with a self-interacting potential. A unified dark fluid characterised by a linear equation of state is considered as the source of dark energy.
S. K. Tripathy, D. Behera, B. Mishra
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Universal relation involving fundamental modes in two-fluid dark matter admixed neutron stars
European Physical Journal C: Particles and FieldsWe systematically investigate the fundamental oscillation frequencies of dark matter admixed neutron stars, focusing on models with self-interacting fermionic dark matter that couples to normal matter solely through gravity.
Hajime Sotani, Ankit Kumar
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Anisotropic fluid cosmology: An alternative to dark matter? [PDF]
Physical Review D, 2020 We use anisotropic fluid cosmology to describe the present, dark energy-dominated, universe. Similarly to what has been proposed for galactic dynamics, the anisotropic fluid gives an effective description of baryonic matter, dark energy and their possible interaction, without assuming the presence of dark matter.
Mariano Cadoni +2 more
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Circular orbits and accretion disk around AdS black holes surrounded by dark fluid with Chaplygin-like equation of state [PDF]
The European Physical Journal C, 2023 In the present work we study the geodesic motion and accretion process of a test particle near an Anti-de Sitter (ADS) BH surrounded by a dark fluid with a Chaplygin-like equation.
G. Mustafa +4 more
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The Formulation of Scaling Expansion in an Euler-Poisson Dark-Fluid Model
Universe, 2023 We present a dark fluid model described as a non-viscous, non-relativistic, rotating, and self-gravitating fluid. We assume that the system has spherical symmetry and that the matter can be described by the polytropic equation of state.
Balázs Endre Szigeti +2 more
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Topological classes of thermodynamics of black holes in perfect fluid dark matter background [PDF]
The European Physical Journal C, 2023 In this paper we explore the topological classes of thermodynamics of a family of black holes. In particular we investigate the influence of distinct fields, including the electric field, non-linear magnetic field, along with the perfect fluid matter ...
Muhammad Rizwan, K. Jusufi
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Self-Similar Solutions of a Gravitating Dark Fluid
Mathematics, 2022 In this paper, a fluid model is presented which contains the general linear equation of state including the gravitation term. The obtained spherical symmetric Euler equation and the continuity equations were investigated with the Sedov-type time ...
Imre Ferenc Barna +2 more
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General Relativistic Space-Time with η1-Einstein Metrics
Mathematics, 2022 The present research paper consists of the study of an η1-Einstein soliton in general relativistic space-time with a torse-forming potential vector field.
Yanlin Li +4 more
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Exploring robust correlations between fermionic dark matter model parameters and neutron star properties: A two-fluid perspective [PDF]
Physical Review D, 2023 The current observational properties of neutron stars have not definitively ruled out the possibility of dark matter. In this study, we primarily focus on exploring correlations between the dark matter model parameters and different neutron star ...
P. Thakur +4 more
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Magnetized black holes surrounded by dark fluid in Lovelock-power-Yang-Mills gravity [PDF]
Journal of Cosmology and Astroparticle Physics, 2020 We consider a model where static spherically symmetric black hole, in the presence of power-Yang-Mills source, is surrounded by a dark fluid with a non-linear equation of state.
Askar Ali, K. Saifullah
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