Year: 2026
Type: article
Abstract: The wave-energy relation is introduced as a new analysis tool for linear radial pulsations. Wave energy consists of kinetic energy, acoustic-potential energy, dynamical-potential energy, and entropy-potential energy. The relation describes changes in the wave energy caused by non-adiabatic processes and by leakage of wave energy. It is applied to modal analysis of adiabatic pulsations for massive zero-age main sequence models ($10\, M_{\odot }$, $20\, M_{\odot }$, and $30\, M_{\odot }$). The ordinary modes are well trapped in the interior cavity without any significant wave-energy leakage. On the other hand, the strange modes (S-modes) exhibit steep increases in the eigenfunctions and kinetic energy toward the stellar surface, as well as significant wave-energy leakage. The kinetic energy of S-modes is no longer confined in the exterior cavity.
DOI: 10.1093/pasj/psag151
Author: Hiroyasu Ando
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7220458707