Results 11 to 20 of about 4,523 (219)
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
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Solar-Like Oscillations in a Massive Star [PDF]
Science, 2009 Star Gazing Seismology of stars provides a unique insight into physical mechanisms taking place in their interior. Like the Sun, some stars have low-amplitude pulsations that are excited by turbulent convection in their outer layers. Belkacem et al. (p.
Belkacem, Kevin +17 more
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Oscillations on the star Procyon [PDF]
Nature, 2004 Stars are sphere of hot gas whose interiors transmit acoustic waves very efficiently. Geologists learn about the interior structure of Earth by monitoring how seismic waves propagate through it and, in a similar way, the interior of a star can be probed using the periodic motions on the surface that arise from such waves. Matthews et al. claim that the
Bouchy, Francois +5 more
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Instabilities of Scalar Fields around Oscillating Stars [PDF]
Physical Review Letters, 2021 18 pages, 18 figures, accepted for publication in Phys.
Ikeda, Taishi +2 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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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.
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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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Non-Radial Oscillations in δ Scuti Stars and Rapidly Oscillating AP Stars [PDF]
Highlights of Astronomy, 1986 AbstractThe present state of our knowledge of non-radial oscillations in δ Scuti stars and Rapidly Oscillating Ap stars is discussed primarily from an observational point of view. For the δ Scuti stars the need for complete frequency solutions for multi-periodic non-radial oscillating stars is emphasized in order for stellar seismology of these stars ...
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TORSIONAL OSCILLATIONS OF NONBARE STRANGE STARS [PDF]
The Astrophysical Journal, 2015 Strange stars are one of the possible compact stellar objects that can be formed after a supernova collapse. We consider a model of strange star having an inner core in the color-flavor locked phase surmounted by a crystalline color superconducting layer.
MANNARELLI, MASSIMO +4 more
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