Results 31 to 40 of about 4,215,064 (363)
An inflationary equation-of-state
International Journal of Modern Physics D, 2023 In this paper, we have studied inflationary paradigm through an inflationary equation-of-state. With a single parameter equation-of-state as a function of the scalar field responsible for accelerated expansion, we find an observationally viable model satisfying all the constraints as laid down by the recent observations.
openaire +2 more sources
Induced gravitational wave interpretation of PTA data: a complete study for general equation of state [PDF]
Journal of Cosmology and Astroparticle PhysicsWe thoroughly study the induced gravitational wave interpretation of the possible gravitational wave background reported by PTA collaborations, considering the unknown equation of state w of the early universe.
Guillem Domènech +3 more
semanticscholar +1 more source
Neural simulation-based inference of the neutron star equation of state directly from telescope spectra [PDF]
Journal of Cosmology and Astroparticle PhysicsNeutron stars provide a unique opportunity to study strongly interacting matter under extreme density conditions. The intricacies of matter inside neutron stars and their equation of state are not directly visible, but determine bulk properties, such as ...
Len Brandes +8 more
semanticscholar +1 more source
A Seismic Equation of State [PDF]
Geophysical Journal International, 1967 Birch's hypothesis of a close relationship between seismic velocity and density is extended and modified so as to be in accord with theoretical predictions concerning the form of the equation of state. Although developed as a simple method to assure consistency between the seismic velocities and densities in free oscillation calculations the resulting ...
openaire +3 more sources
The cosmic equation of state [PDF]
Astrophysics and Space Science, 2014 7 Pages, 3 Figures.
openaire +2 more sources
Multimessenger constraints on the neutron-star equation of state and the Hubble constant
Science, 2020 A combined multimessenger analysis Neutron stars are stellar remnants with densities greater than that of an atomic nucleus. The properties of matter under such extreme conditions are poorly understood and inaccessible to terrestrial laboratories ...
T. Dietrich +7 more
semanticscholar +1 more source
LOW-TEMPERATURE EQUATION OF STATE OF SOLID METHANE [PDF]
Holodilʹnaâ Tehnika i Tehnologiâ, 2016 The theoretical equation of state for solid methane, developed within the framework of perturbation theory, with the crystal consisting of spherical molecules as zero-order approximation, and octupole – octupole interaction of methane molecules as a ...
L. N. Yakub, O. S. Bodiul
doaj +2 more sources
Equation of State in Numerical Relativistic Hydrodynamics [PDF]
, 2006 Relativistic temperature of gas raises the issue of the equation of state (EoS) in relativistic hydrodynamics. We study the EoS for numerical relativistic hydrodynamics, and propose a new EoS that is simple and yet approximates very closely the EoS of ...
Dongsu Ryu +5 more
core +3 more sources
Masses, Radii, and the Equation of State of Neutron Stars [PDF]
, 2016 We summarize our current knowledge of neutron-star masses and radii. Recent instrumentation and computational advances have resulted in a rapid increase in the discovery rate and precise timing of radio pulsars in binaries in the past few years, leading ...
F. Ozel, P. Freire
semanticscholar +1 more source
Neutron-Star-Merger Equation of State
Universe, 2019 In this work, we discuss the dense matter equation of state (EOS) for the extreme range of conditions encountered in neutron stars and their mergers. The calculation of the properties of such an EOS involves modeling different degrees of freedom (such as
Veronica Dexheimer +7 more
doaj +1 more source