The Wigner distribution for pulsation behaviors in post-AGB

Details The Wigner distribution for pulsation behaviors in post-AGB The Wigner distribution for pulsation behaviors in post-AGB

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003assl..283..115a&link_type=abstract

In: Mass-losing pulsating stars and their circumstellar matter. Workshop, May 13-16, 2002, Sendai, Japan, edited by Y. Nakada, M

Astronomy and Astrophysics

Astrophysics

Nonlinear Pulsations, Post-Agb Stars

Scientific paper

Some of post-AGB stars show irregular pulsation with small amplitudes. Sometimes they appear as regular pulsators but sometimes they show quite irregular behaviors. We believe that both these behaviors are realized in a steady state of nonlinear pulsation. The Wigner distribution have been used in many sound analyzes for a tool of the time frequency distribution. So we apply the method to the time-frequency distribution of irregular pulsation of post-AGB stars to characterize the nonlinear pulsation. We first use this to the time-series data of model pulsation.

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