Results 11 to 20 of about 3,411,153 (359)
Electrodynamics of a Cosmic Dark Fluid [PDF]
Symmetry, 2016 Cosmic Dark Fluid is considered as a non-stationary medium, in which electromagnetic waves propagate, and magneto-electric field structures emerge and evolve.
A. Balakin
semanticscholar +9 more sources
Effective fluid description of the dark universe [PDF]
Physics Letters B, 2018 We propose an effective anisotropic fluid description for a generic infrared-modified theory of gravity. In our framework, the additional component of the acceleration, commonly attributed to dark matter, is explained as a radial pressure generated by ...
M. Cadoni +4 more
doaj +7 more sources
Viscous dark fluid universe [PDF]
Physical Review D, 2010 We investigate the cosmological perturbation dynamics for a universe consisting of pressureless baryonic matter and a viscous fluid, the latter representing a unified model of the dark sector. In the homogeneous and isotropic background the \textit{total} energy density of this mixture behaves as a generalized Chaplygin gas.
Wiliam S. Hipólito-Ricaldi +2 more
core +6 more sources
Constraining the dark fluid [PDF]
Physical Review D, 2009 5 pages, 5 figures incorporated.
Kunz, Martin +3 more
openaire +7 more sources
Interacting viscous dark fluids [PDF]
Physical Review D, 2013 16 pages, 11 figures, 5 ...
Arturo Avelino +2 more
openalex +4 more sources
Covariant generalized holographic dark energy and accelerating universe [PDF]
European Physical Journal C: Particles and Fields, 2017 We propose the generalized holographic dark energy model where the infrared cutoff is identified with the combination of the FRW universe parameters: the Hubble rate, particle and future horizons, cosmological constant, the universe lifetime (if finite ...
Shin’ichi Nojiri, S. D. Odintsov
doaj +4 more sources
Dark matter fluid constraints from galaxy rotation curves [PDF]
European Physical Journal C: Particles and Fields, 2023 Galaxy rotation curves are considered to be convincing evidence for dark matter or some dynamically equivalent alternative mechanism. Starting only from the rotation curve data, we present a model independent approach of testing a general hypothesis that
Dalibor Perković, Hrvoje Štefančić
doaj +2 more sources
Black holes surrounded by Einstein clusters as models of dark matter fluid [PDF]
European Physical Journal C: Particles and Fields, 2023 We construct a novel class of spherically symmetric and asymptotically flat black holes and naked singularities surrounded by anisotropic dark matter fluid with the equation of state (EoS) of the form $$P_t=\omega \rho $$ P t = ω ρ .
Kimet Jusufi
doaj +2 more sources
A new pressure-parametrization unified dark fluid model [PDF]
European Physical Journal C: Particles and Fields, 2017 We propose a new pressure-parametrization model to explain the accelerated expansion of the late-time Universe by considering the baryon matter and dark contents (dark matter and dark energy) as a unified dark fluid. To realize this model more physically,
Deng Wang, Yang-Jie Yan, Xin-He Meng
doaj +2 more sources
Statistical and Dynamical Decoupling of the IGM from Dark Matter
Advances in Astronomy, 2011 Although the gravitational field in the universe is dominated by dark matter, cosmological observations show that the statistical properties of cosmic baryonic matter are significantly and systematically decoupled from that of the underlying dark matter.
Li-Zhi Fang, Weishan Zhu
doaj +3 more sources