Application of time-dependent Fourier analysis to nonlinear pulsational stellar models

Details Application of time-dependent Fourier analysis to nonlinear pulsational stellar models Application of time-dependent Fourier analysis to nonlinear pulsational stellar models

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...319..247k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 319, Aug. 1, 1987, p. 247-259. Research supported by the University of Flor

Astronomy and Astrophysics

Astrophysics

11

Fourier Analysis, Stellar Models, Stellar Oscillations, Time Dependence, Variable Stars, Magnetohydrodynamic Flow, Vibration Mode

Scientific paper

The variation of the modal content of the numerical hydrodynamical integration with various initializations of nonlinear RR Lyrae models is studied with the aid of a time-dependent Fourier analysis. The authors discuss the sensitivity of the derived temporal behavior of the amplitudes and phases to the parameters of the method. New light is shed on many very interesting details of mode interaction during the transient phases, not seen before, and a better assessment of the final state of the amplitude evolution results.

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