4 papers
A generalized quadratic balance relation for nonradial nonadiabatic pulsations
Jan Zalewski
We derive a generalized quadratic balance relation for linear nonadiabatic, nonradial stellar pulsations, starting from a sesquilinear amplitude analogue of the pressure-volume-rat…
A quadratic balance relation for radial nonadiabatic pulsations
Jan Zalewski
Using a sesquilinear pressure - rate of volume change kernel and linear pulsation equations, we formulate a balance relation combining work integral, surface terms, norm integral a…
On the numerical reliability of nonadiabatic pulsation solutions in AGB envelopes
Jan Zalewski
We re-examine integration methods of linear nonadiabatic radial pulsations in the envelopes of AGB and post-AGB stars using the subspace shooting formulation. In the article the ac…
Boundary conditions for radial pulsations in AGB envelopes
Jan Zalewski
We present a formulation of outer and inner boundary conditions for radial non-adiabatic pulsations in AGB/post-AGB envelopes in terms of local structure of pulsation equations. Th…