On dark matter as a geometric effect in the galactic halo
Sign Up to like & getrecommendations! Published in 2021 at "Astrophysics and Space Science"
DOI: 10.1007/s10509-021-03997-5
Abstract: We obtain more straightforwardly some features of dark matter distribution in the halos of galaxies by considering the spherically symmetric space-time, which satisfies the flat rotational curve condition, and the geometric equation of state resulting… read more here.
Keywords: matter; dark matter; galactic halo; equation state ... See more keywords
Equation of State for Hot Quark Matter with Neutrino Confinement
Sign Up to like & getrecommendations! Published in 2018 at "Astrophysics"
DOI: 10.1007/s10511-018-9553-6
Abstract: The equation of state and composition of hot strange quark matter that is opaque to neutrinos are determined. This study is based on the MIT quark bag model. Three different variants of the lepton population… read more here.
Keywords: neutrino; equation state; quark; hot quark ... See more keywords
A parallel framework for a multipoint flux mixed finite element equation of state compositional flow simulator
Sign Up to like & getrecommendations! Published in 2017 at "Computational Geosciences"
DOI: 10.1007/s10596-017-9683-7
Abstract: Mathematical models of physical problems are becoming increasingly complex and computationally intensive. At the same time, computing hardware is becoming more parallelized with an increasing number of cores promoting simultaneous tasks. In this work, we… read more here.
Keywords: flux mixed; compositional flow; equation state; multipoint flux ... See more keywords
Structure of compact stars in R-squared Palatini gravity
Sign Up to like & getrecommendations! Published in 2017 at "General Relativity and Gravitation"
DOI: 10.1007/s10714-016-2182-7
Abstract: We analyse configurations of neutron stars in the so-called R-squared gravity in the Palatini formalism. Using a realistic equation of state we show that the mass–radius configurations are lighter than their counterparts in General Relativity.… read more here.
Keywords: compact stars; mass; equation state; general relativity ... See more keywords
Reconstructions of the dark-energy equation of state and the inflationary potential
Sign Up to like & getrecommendations! Published in 2018 at "General Relativity and Gravitation"
DOI: 10.1007/s10714-018-2402-4
Abstract: We use a mathematical approach based on the constraints systems in order to reconstruct the equation of state and the inflationary potential for the inflaton field from the observed spectral indices for the density perturbations… read more here.
Keywords: left right; state inflationary; inflationary potential; equation state ... See more keywords
Behavior of anisotropic fluids with Chaplygin equation of state in Buchdahl spacetime
Sign Up to like & getrecommendations! Published in 2021 at "General Relativity and Gravitation"
DOI: 10.1007/s10714-021-02883-3
Abstract: In the present study we have proposed a new model of an anisotropic compact star which admits the Chaplygin equation of state. For this purpose, we consider Buchdahl ansatz. We obtain the solution of proposed… read more here.
Keywords: anisotropic; chaplygin equation; equation; model ... See more keywords
Thermodynamic Consistency Test of Vapor–liquid Equilibrium Data of Binary Systems Including Carbon Dioxide (CO2) and Ionic Liquids Using the Generic Redlich–Kwong Equation of State
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Solution Chemistry"
DOI: 10.1007/s10953-020-00963-7
Abstract: The thermodynamic consistency test of solubility P–T–x data for binary mixtures including carbon dioxide (CO2) + a room temperature ionic liquid has been investigated. Experimental solubility data taken from the open literature for 32 binary mixtures of… read more here.
Keywords: thermodynamic consistency; consistency test; consistency; equation state ... See more keywords
Prediction of critical temperature, critical pressure and acentric factor of some ionic liquids using Patel-Teja equation of state based on genetic algorithm
Sign Up to like & getrecommendations! Published in 2017 at "Korean Journal of Chemical Engineering"
DOI: 10.1007/s11814-017-0166-2
Abstract: Critical properties and acentric factor (ω) of 31 ionic liquids (ILs) were obtained by using vapor-liquid equilibrium data of solvent+IL consisting of P-T and P-x experimental data, based on three-parameter Patel-Teja equation of state and… read more here.
Keywords: equation state; factor ionic; equation; ionic liquids ... See more keywords
A new equation of state to predict S-CO2 flow with real gas effects
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Mechanical Science and Technology"
DOI: 10.1007/s12206-018-0212-y
Abstract: The accuracy of the thermodynamic properties prediction from the different Equation of state (EOS) varies upon the range of temperature and pressure. Despite the variety of EOS available, there is no de facto for selecting… read more here.
Keywords: flow real; equation state; co2; real gas ... See more keywords
Reconstructing equation of state of dark energy with principal component analysis
Sign Up to like & getrecommendations! Published in 2019 at "Physics of the Dark Universe"
DOI: 10.1016/j.dark.2019.100379
Abstract: We represent a nonparametric method to reconstruct the equation of state for dark energy directly from observational Hubble parameter data. We use principal component analysis (PCA) to extract the signal from data with noise. Moreover,… read more here.
Keywords: dark energy; equation state;
Lagrangian formulation for an extended cosmological equation-of-state
Sign Up to like & getrecommendations! Published in 2020 at "Physics of the Dark Universe"
DOI: 10.1016/j.dark.2020.100751
Abstract: Abstract We show that the extended cosmological equation-of-state developed starting from a Chaplygin equation-of-state, recently applied to stellar modelling, is a viable dark energy model consistent with standard scalar potentials. Moreover we find a Lagrangian… read more here.
Keywords: lagrangian formulation; extended cosmological; equation state; cosmological equation ... See more keywords