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- W2935620213 abstract "Abstract A nonlinear development of radial pulsation instability to a resonant excitation of nonradial modes is studied. The theory covers the cases of axisymmetric ( m = 0) modes as well as ( m , −m ) pairs. Adopting a simplified treatment of the mode coupling, it is found that multimode pulsation with constant amplitudes is a highly probable solution. An observable consequence of the m = 0 mode excitation is randomness of pulsation amplitude. The case of an l = 1 mode is the most important because of a small averaging effect and a large excitation probability. A significant amplitude and phase modulation is predicted in the case of excitation of an l = 1, m = ±1 pair. This may explain Blazhko-type modulation in RR Lyrae stars. If this model is correct, the modulation period is determined by the rotation rate and the Brunt-Väisälä frequency in the deepest part of the radiative envelope." @default.
- W2935620213 created "2019-04-11" @default.
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- W2935620213 date "2002-01-01" @default.
- W2935620213 modified "2023-10-17" @default.
- W2935620213 title "Resonant Excitation of Nonradial Modes in RR Lyrae Stars" @default.
- W2935620213 cites W1852203787 @default.
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- W2935620213 doi "https://doi.org/10.1017/s025292110001664x" @default.
- W2935620213 hasPublicationYear "2002" @default.
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