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Relativistic Stellar Pulsations [PDF]
, 1987 This thesis consists of studies on the topic of relativistic stellar pulsations. i) A new formalism for the numerical study of g-modes in neutron stars is developed. This formalism avoids pitfalls associated with previous formalisms when applied to the study of these low-frequency modes.
Finn, Lee Samuel
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EAS Publications Series, 2014 Asteroseismology is a powerful technique that can be employed to determine precise fundamental parameters of stars, such as the radius, mass and age.
O.L. Creevey
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Modelling Quasi-Periodic Pulsations in Solar and Stellar Flares [PDF]
Space Science Reviews, 2018 Solar flare emission is detected in all EM bands and variations in flux density of solar energetic particles. Often the EM radiation generated in solar and stellar flares shows a pronounced oscillatory pattern, with characteristic periods ranging from a ...
J A Mclaughlin +2 more
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Monthly Notices of the Royal Astronomical Society, 2016 The simulation of finite amplitude stellar pulsations and the theoretical determination of the final fate of violently unstable stellar models require the complete consideration of the mechanics and thermodynamics of a star.
W Glatzel, Glatzel W
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The simulation of non-linear stellar pulsations
Monthly Notices of the Royal Astronomical Society, 2005 Details of a method for the numerical simulation of stellar pulsations and instabilities in the non-linear regime are presented. Important properties of the method are intrinsic mass and energy conservation.
W Glatzel, Glatzel W
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Theoretical Stellar Pulsation Physics
Proceedings of the International Astronomical Union, 2022AbstractPulsating stars play a crucial role in the calibration of the cosmic distance scale as well as in tracing the properties of the associated stellar populations. In the era of large observational surveys and precise astrometric missions, it is crucial to rely on accurate stellar pulsation models able to predict the observed behaviors for ...
M. Marconi +3 more
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On the Observed Complexity of Chaotic Stellar Pulsation
International Astronomical Union Colloquium, 1993The existence of some variable stars producing very complicated light curves is well known. Theoretical calculations suggest that the irregular behaviour of the pulsation models in the RV Tauri and W Virginis regime is low dimensional is the result of period-doubling or tangent bifurcations (see e.g.
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Stellar Pulsations and Stability
2002Being a dynamical system, the star has diverse oscillatory eigenmodes. When one takes thermal processes into account, some of these appear to be unstable. The increment of such an instability γ, equal to the inverse time scale of the amplitude increase by a factor of e, is usually well below the pulsational frequency ω.
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Challenges In Stellar Pulsation
2010Ever since some stars were found to pulsate in the early 20th century, stellar pulsation has been a major topic in astronomy and astrophysics. The huge amount of data recently available from observational surveys, new discoveries from space missions and studies of pulsating stars in low-metallicity environments have opened new perspectives and ...
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Physical mechanisms in stellar pulsations
The Journal of the Acoustical Society of America, 1985Stars evolve from their births to their deaths by converting their store of hydrogen to helium, and then much of this helium is fused to heavier elements such as carbon, oxygen, and up to iron. During this evolution, the stellar mass may decrease by a stellar wind mass loss, the radius usually greatly increases, and the radiation luminosity emitted at ...
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