Results 1 to 10 of about 6,412,039 (402)
Information Equation of State [PDF]
Entropy, 2008 Landauer’s principle is applied to information in the universe. Once stars began forming there was a constant information energy density as the increasing proportion of matter at high stellar temperatures exactly compensated for the expanding ...
M. Paul Gough
doaj +6 more sources
GW170817: Measurements of Neutron Star Radii and Equation of State [PDF]
Physical Review Letters, 2018 On 17 August 2017, the LIGO and Virgo observatories made the first direct detection of gravitational waves from the coalescence of a neutron star binary system.
R X Adhikari, Vaishali B Adya, M Agathos
exaly +2 more sources
Inverse Heat Conduction and Heat Exchangers, 2020 An equation of state (EOS) is a thermodynamic expression that relates pressure (P), temperature (T), and volume (V). This equation is used to describe the state of reservoir fluids at given conditions. The cubic equations of state (CEOS) such as Van der Waals, Redlich-Kwong, Soave, and Peng-Robinson are simple models that have been widely used in the ...
E. M. Mansour
openaire +4 more sources
The Equation of State of Biogas [PDF]
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2017 The presented work deals with a state behavior of real gas, biogas. Theoretical approach was utilized for processing of this work. Compressibility factor was calculated with help of two equation of state – Van der Waals equation and Redlich‑Kwong ...
Petr Trávníček +2 more
doaj +3 more sources
Equation of State of Four- and Five-Dimensional Hard-Hypersphere Mixtures [PDF]
Entropy, 2020 New proposals for the equation of state of four- and five-dimensional hard-hypersphere mixtures in terms of the equation of state of the corresponding monocomponent hard-hypersphere fluid are introduced.
Mariano López de Haro +2 more
doaj +2 more sources
Probing the equation of state of the early Universe with pulsar timing arrays [PDF]
Journal of Cosmology and Astroparticle Physics, 2023 The recently released data by pulsar timing array (PTA) collaborations have amassed substantial evidence corroborating the existence of a stochastic signal consistent with a gravitational-wave background at frequencies around the nanohertz regime.
Lang Liu, Zu-Cheng Chen, Q. Huang
semanticscholar +1 more source
The state of the dark energy equation of state circa 2023 [PDF]
Journal of Cosmology and Astroparticle Physics, 2023 We critically examine the state of current constraints on the dark energy (DE) equation of state (EoS) w. Our study is motivated by the observation that, while broadly consistent with the cosmological constant value w = -1, several independent probes ...
Luis A. Escamilla +4 more
semanticscholar +1 more source
Simultaneously probing the sound speed and equation of state of the early Universe with pulsar timing arrays [PDF]
Journal of Cosmology and Astroparticle Physics, 2023 Recently, several major pulsar timing array (PTA) collaborations have assembled strong evidence for the existence of a gravitational-wave background at frequencies around the nanohertz regime.
Lang Liu, You Wu, Zu-Cheng Chen
semanticscholar +1 more source
Neural network reconstruction of the dense matter equation of state from neutron star observables [PDF]
Journal of Cosmology and Astroparticle Physics, 2022 The Equation of State (EoS) of strongly interacting cold and hot ultra-dense QCD matter remains a major challenge in the field of nuclear astrophysics. With the advancements in measurements of neutron star masses, radii, and tidal deformabilities, from ...
Shriya Soma +4 more
semanticscholar +1 more source
Chemical Potential of a Lennard Jones Fluid [PDF]
Serbian Astronomical Journal, 2010 The aim of this paper is to present results of analytical calculation of chemical potential of a Lennard Jones (LJ) fluid performed in two ways: by using the thermodynamical formalism and the formalism of statistical mechanics.
Celebonovic, V.
doaj +3 more sources