The effect of time-dependent random mass density field on frequencies of solar sound waves

Authors
Murawski, K Nocera, L Medrek, M
Citation
K. Murawski et al., The effect of time-dependent random mass density field on frequencies of solar sound waves, ASTRON ASTR, 376(2), 2001, pp. 708-712
Citations number
26
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY & ASTROPHYSICS
ISSN journal
14320746 → ACNP
Volume
376
Issue
2
Year of publication
2001
Pages
708 - 712
Database
ISI
SICI code
1432-0746(200109)376:2<708:TEOTRM>2.0.ZU;2-1
Abstract
The effect of a time-dependent random mass density field on the frequencies and amplitudes of solar p-modes approximated as sound waves is considered by analytical perturbative means and numerical simulations for one-dimensio nal hydrodynamic equations. The analytical results, which are worked out fo r a Gaussian spectrum of the random mass fluctuations, show frequency incre ase and amplitude amplification, in agreement with numerical simulations.