Results 1 to 10 of about 7,494 (265)

Oscillations of rapidly rotating superfluid stars [PDF]

Monthly Notices of the Royal Astronomical Society, 2009
Using time evolutions of the relevant linearized equations, we study non-axisymmetric oscillations of rapidly rotating and superfluid neutron stars.
Passamonti, A., Andersson, N., Haskell, B.   +2 more
core   +4 more sources

R-mode oscillations ubiquitous in stars

, 2018
Properties and examples of r mode oscillations in rotating stars  (normal modes of global Rossby waves) are discussed. R modes seems to be mainly excited mechanically by the flow caused by a spot, tidal forces, mass-loss, or accretion.
Saio, Hideyuki (6006512), Saio, Hideyuki, Saio, Hiideyuki   +2 more
core   +5 more sources

Solar-like oscillations in cluster stars [PDF]

Astronomische Nachrichten, 2010
peer reviewedThis article summaries a talk given at the HELAS IV international meeting We present a brief overview of the history of attempts to obtain a clear detection of solar-like oscillations in cluster stars, and discuss the results on the first ...
H. Kjeldsen, Chaplin, W. J., Elsworth, Y.P., Molenda-Żakowicz, J., C. Karoff, T.R. Bedding, Bruntt, H., Chaplin, W.J., Stello, D., Sterken, C., Meibom, S., J. Christensen-Dalsgaard, Noels-Grötsch, Arlette, R.A. García, Elsworth, Y. P., Garcia Moreno Rodriguez, Renata, García, R.A., S. Mathur, Demarque, P., Christensen-Dalsgaard, J., Lebreton, Y., Roxburgh, I.W., S. Hekker, R.L. Gilliland, Noels, A., Gilliland, R. L., Roxburgh, I. W., Basu, S., Karoff, C., S. Basu, K. Brogaard, Kjeldsen, H., J. Molenda-Żakowicz, C. Sterken, H. Bruntt, Bedding, T.R., Huber, D., V.S. Aguirre, Brogaard, K., Y. Lebreton, Elsworth, Yvonne, Mathur, S., S. Meibom, Aguirre, V.S., Aguirre, V. S., P. Demarque, Hekker, S., Y.P. Elsworth, R. Szabö, Szabó, R., W.J. Chaplin, Bedding, T. R., Gilliland, R.L., Hekker, Saskia, D. Huber, Stello, D, A. Noels, D. Stello, I.W. Roxburgh   +58 more
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Torsional oscillations of strange stars [PDF]

EPJ Web of Conferences, 2014
Strange stars are one of the hypothetical compact stellar objects that can be formed after a supernova explosion. The existence of these objects relies on the absolute stability of strange collapsed quark matter with respect to standard nuclear matter ...
Massimo Mannarelli, Mannarelli Massimo
core   +4 more sources

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

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, Samadi, Davoud-Reza, Goupil, Marie-José, Lefèvre, Laure, Baudin, Frederic, Deheuvels, Sébastien, Dupret, Marc-Antoine, Appourchaux, Thierry, Scuflaire, Richard, Auvergne, Michel, Catala, Claude, Michel, Eric, Miglio, Andrea, Montalbán, Josefina, Thoul, Anne, Talon, Suzanne, Baglin, Annie, Noels, Arlette   +17 more
openaire   +5 more sources

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, Maeder, Andre, Mayor, Michel, Megevand, Denis, Pepe, Francesco, Sosnowska, Danuta   +5 more
openaire   +3 more sources

Instabilities of Scalar Fields around Oscillating Stars [PDF]

Physical Review Letters, 2021
18 pages, 18 figures, accepted for publication in Phys.
Ikeda, Taishi, Cardoso, Vitor, Zilhão, Miguel   +2 more
openaire   +6 more sources

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

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 ...
openaire   +1 more source