Results 1 to 10 of about 861,748 (165)
Fast Rotating Neutron Stars: Oscillations and Instabilities [PDF]
Frontiers in Astronomy and Space Sciences, 2021 In this review article, we present the main results from our most recent research concerning the oscillations of fast rotating neutron stars. We derive a set of time evolution equations for the investigation of non-axisymmetric oscillations of rapidly ...
C. Krüger +3 more
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Radial oscillations of dark matter admixed neutron stars [PDF]
Physical Review D, 2022 Within the relativistic mean-field model, we investigate the properties of dark matter (DM) admixed neutron stars, considering non-rotating objects made of isotropic matter.
Pinku Routaray +5 more
semanticscholar +1 more source
Oscillations of highly magnetized non-rotating neutron stars [PDF]
Communications Physics, 2022 Highly magnetized neutron stars are promising candidates to explain some of the most peculiar astronomical phenomena, for instance, fast radio bursts, gamma-ray bursts, and superluminous supernovae. Pulsations of these highly magnetized neutron stars are
Man Yin Leung +3 more
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Radial Oscillations of Quark Stars Admixed with Dark Matter [PDF]
Universe, 2021 We investigated compact stars consisting of cold quark matter and fermionic dark matter treated as two admixed fluids. We computed the stellar structures and fundamental radial oscillation frequencies of different masses of the dark fermion in the cases ...
J. C. Jim'enez, E. Fraga
semanticscholar +1 more source
g -mode oscillations in hybrid stars: A tale of two sounds [PDF]
, 2021 We study the principal core g-mode oscillation in hybrid stars containing quark matter and find that they have an unusually large frequency range (≈ 200 600 Hz) compared to ordinary neutron stars or self-bound quark stars of the same mass.
P. Jaikumar +3 more
semanticscholar +1 more source
Boson stars and their radial oscillations [PDF]
, 2021 We review the derivation of the pulsations equations for spherically symmetric boson stars and then make a thorough study of the radial oscillation frequencies for the fundamental and first excited modes.
B. Kain
semanticscholar +1 more source
Radial oscillations and stability of compact stars in f(R, T) = R+ 2β T gravity [PDF]
Journal of Cosmology and Astroparticle Physics, 2020 We examine the static structure configurations and radial stability of compact stars within the context of f(R, T) gravity, with R and T standing for the Ricci scalar and trace of the energy-momentum tensor, respectively.
Juan M.Z. Pretel +3 more
semanticscholar +1 more source
Asteroseismology: Radial oscillations of neutron stars with realistic equation of state [PDF]
Physical Review D, 2020 We study radial oscillations of non-rotating neutron stars (NSs) in four-dimensional General Relativity. The interior of the NS was modelled within a recently proposed multicomponent realistic equation of state (EoS) with the induced surface tension (IST)
V. Sagun, G. Panotopoulos, Ilídio Lopes
semanticscholar +1 more source
Oscillations of Rapidly Rotating Stars [PDF]
International Astronomical Union Colloquium, 2000 AbstractWe present numerical simulations of gravito-inertial waves propagating in radiative zones of rapidly rotating stars. A first model, using the Boussinesq approximation, allows us to study the oscillations of a quasi-incompressible stratified fluid embedded in a rapidly rotating sphere or spherical shell. In a second step, we investigate the case
Dintrans, Boris, Rieutord, Michel
openaire +2 more sources
Reliable description of the radial oscillations of compact stars [PDF]
Physical Review D, 2020 We develop a numerical algorithm for the solution of the Sturm-Liouville differential equation governing the stationary radial oscillations of nonrotating compact stars.
F. D. Clemente +2 more
semanticscholar +1 more source