Comparison of pulsation modes in rapidly rotating polytropic and SCF models

Details Comparison of pulsation modes in rapidly rotating polytropic and SCF models Comparison of pulsation modes in rapidly rotating polytropic and SCF models

Jul 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009coast.158..264r&link_type=abstract

"Communications in Asteroseismology, Vol.158, p. 264 Proceedings of "38th Liege International Astrophysical Colloquium: Evoluti

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In this talk, I will show numerical calculations of pulsation modes in rapidly differentially rotating stellar models based on the self-consistent field (SCF) method {(e.g. MacGregor et al. 2007)}. The pulsation calculations are based on the numerical method presented in {Lignières et al. (2006)} and {Reese et al. (2006)}. I will compare these results with previous calculations based on simpler polytropic models, and discuss how the structure of the frequency spectrum is affected by differential rotation and other stellar parameters. In particular, differential rotation can lead to a breakdown of regularities in the frequency spectrum in favour of a more chaotic behaviour.

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