Results 1 to 10 of about 3,411,153 (359)
Dissipative unified dark fluid model [PDF]
International Journal of Modern Physics D, 2018 We consider a unified barotropic dark fluid model with dissipation. Our fluid asymptotes between two power laws and so can interpolate between the dust and dark energy (DE) equations-of-state at early and late times.
Esraa Elkhateeb
semanticscholar +6 more sources
The Logotropic Dark Fluid as a unification of dark matter and dark energy [PDF]
Physics Letters B, 2016 We propose a heuristic unification of dark matter and dark energy in terms of a single “dark fluid” with a logotropic equation of state P=Aln(ρ/ρP), where ρ is the rest-mass density, ρP=5.16×1099gm−3 is the Planck density, and A is the logotropic ...
Pierre-Henri Chavanis
doaj +4 more sources
Thermodynamics and evaporation of perfect fluid dark matter black hole in phantom background [PDF]
European Physical Journal C: Particles and Fields, 2023 We present a novel interpretation of the thermodynamics of perfect fluid dark matter (PFDM) black hole based on Misner–Sharp energy and then investigate its evaporation behavior.
Xiao Liang +3 more
doaj +4 more sources
Thin accretion disk luminosity and its image around rotating black holes in perfect fluid dark matter [PDF]
Monthly notices of the Royal Astronomical Society, 2022 Motivated by the fact that the universe is dominated by dark matter and dark energy, we consider rotating black holes surrounded by perfect fluid dark matter and study the accretion process in thin disk around such black holes.
Malihe Heydari-Fard +2 more
openalex +3 more sources
Unifying dark matter, dark energy and inflation with a fuzzy dark fluid [PDF]
Journal of Cosmology and Astroparticle Physics, 2020 Scalar fields appear in many cosmological models, in particular in order to provide explanations for dark energy and inflation, but also to emulate dark matter.
A. Arbey, J.-F. Coupechoux
semanticscholar +6 more sources
Thermodynamical analysis of charged rotating black hole surrounded by perfect fluid dark matter
Nuclear Physics B, 2023 This paper is devoted to studying thermodynamics and particle acceleration around charged rotating BHs surrounded by perfect fluid dark matter. In the beginning, we discuss BH horizons, ergosphere and inner stable circular orbits in the framework of ...
Gulzoda Rakhimova +4 more
doaj +2 more sources
A viable dark fluid model [PDF]
Astrophysics and Space Science, 2017 We consider a cosmological model based on a generalization of the equation of state proposed by Nojiri and Odintsov (2004) and Štefančić (2005, 2006).
Esraa Elkhateeb
semanticscholar +4 more sources
Barotropic fluid compatible parametrizations of dark energy [PDF]
European Physical Journal C: Particles and Fields, 2020 Parametrizations of equation of state parameter as a function of the scale factor or redshift are frequently used in dark energy modeling. The question investigated in this paper is if parametrizations proposed in the literature are compatible with the ...
Dalibor Perković, Hrvoje Štefančić
doaj +2 more sources
European Physical Journal C: Particles and FieldsIn this paper, we study the higher dimensional black holes of Lovelock gravity coupled with a conformal scalar field. The matter source of gravity is suggested to come from the Chaplygin-like dark fluid, i.e., the hybrid of a dark matter and dark energy.
Askar Ali, Khalid Saifullah
doaj +2 more sources
Massive scalar field perturbations of black holes immersed in Chaplygin-like dark fluid [PDF]
Journal of Cosmology and Astroparticle PhysicsWe consider massive scalar field perturbations in the background of black holes immersed in Chaplygin-like dark fluid (CDF), and we analyze the photon sphere modes, the de Sitter modes as well as the near extremal modes and discuss their dominance, by ...
Ramón Bécar +3 more
openalex +3 more sources