Results 21 to 30 of about 861,847 (264)
Non-radial oscillations in anisotropic dark energy stars [PDF]
The European Physical Journal CWe study the non-radial f-mode oscillations of both isotropic and anisotropic dark energy stars by using the modified Chaplygin prescription of dark energy to model the stellar matter.
O. P. Jyothilakshmi +2 more
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Gaussian process modelling of granulation and oscillations in red giant stars [PDF]
Monthly notices of the Royal Astronomical Society, 2019 The analysis of photometric time series in the context of transiting planet surveys suffers from the presence of stellar signals, often dubbed ‘stellar noise’.
F. Pereira +8 more
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Alfvén polar oscillations of relativistic stars [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 We study polar Alfvén oscillations of relativistic stars endowed with a strong global poloidal dipole magnetic field. Here we focus only on the axisymmetric oscillations which are studied by evolving numerically the two-dimensional perturbation equations.
Sotani, H., Kokkotas, K. D.
openaire +2 more sources
Tidally Excited Oscillations in Heartbeat Binary Stars: Pulsation Phases and Mode Identification [PDF]
Astrophysical Journal, 2019 Tidal forces in eccentric binary stars known as heartbeat stars excite detectable oscillations that shed light on the processes of tidal synchronization and circularization.
Zhao Guo +3 more
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Rapidly Oscillating Ap Stars [PDF]
Annual Review of Astronomy and Astrophysics, 1982 Article de synthese sur les etoiles Ap a oscillation rapide (roAp) portant sur HR 3831 et le modele de pulsateur oblique, HR 1217 et l'asteroseismologie, les modeles de pulsateurs «tachetes» (Mathys G., 1985, Astron. Astrophys., 151), HD 60435 et le temps de vie des modes de pulsation, les changements de periode, les mecanismes d'excitation, la ...
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GW170817 implications on the frequency and damping time of f -mode oscillations of neutron stars [PDF]
Physical Review C, 2019 Within a minimum model for neutron stars consisting of nucleons, electrons and muons at $\beta$-equilibrium using about a dozen Equation of States (EOSs) from microscopic nuclear many-body theories and 40,000 EOSs randomly generated using an explicitly ...
Dehua Wen +3 more
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Magnetic fields of 30 to 100 kG in the cores of red giant stars [PDF]
Nature, 2022 A red giant star is an evolved low- or intermediate-mass star that has exhausted its central hydrogen content, leaving a helium core and a hydrogen-burning shell.
Gang Li +3 more
semanticscholar +1 more source
Oscillations of rotating neutron stars [PDF]
The Astrophysical Journal, 1991 AbstractWe use a perturbation technique to compute the rotational corrections to the non-radial oscillation spectrum of a realistic neutron-star model. We compute, to first order in the rotation rate, the corrections to the normal mode eigenfrequencies and eigenfunctions.
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Torsional oscillations of magnetized relativistic stars [PDF]
Monthly Notices of the Royal Astronomical Society, 2001 Strong magnetic fields in relativistic stars can be a cause of crust fracturing, resulting in the excitation of global torsional oscillations. Such oscillations could become observable in gravitational waves or in high-energy radiation, thus becoming a tool for probing the equation of state of relativistic stars.
Messios, Neophytos +2 more
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Forward Asteroseismic Modeling of Stars with a Convective Core from Gravity-mode Oscillations: Parameter Estimation and Stellar Model Selection [PDF]
Astrophysical Journal Supplement Series, 2018 We propose a methodological framework to perform forward asteroseismic modeling of stars with a convective core, based on gravity-mode oscillations. These probe the near-core region in the deep stellar interior.
C. Aerts +19 more
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