Spatial stratification of acoustic oscillations in the solar photosphere

• Veröffentlicht in: Кинематика и физика небесных тел
• Datum: 2005
• ISSN: 0233-7665
• 1. Verfasser: Stodilka, M.I.
• Format: Artikel
• Sprache: Englisch
• Veröffentlicht: Головна астрономічна обсерваторія НАН України 2005
• Schlagworte: MS2: Physics of Solar Atmosphere
• Online Zugang: https://nasplib.isofts.kiev.ua/handle/123456789/79617
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Zitieren: Spatial stratification of acoustic oscillations in the solar photosphere / M.I. Stodilka // Кинематика и физика небесных тел. — 2005. — Т. 21, № 5-додаток. — С. 124-128. — Бібліогр.: 9 назв. — англ.

Space-time variations of solar atmosphere parameters are derived by solving non-equilibrium radiation transfer problem. Acoustic oscillations were extracted using k − ω filtration of variations. In the lower photosphere there are evanescent remnants of underphotosphere oscillations; in the middle and high photosphere there are discrete sources of oscillations, which are excited by granule decay and formation of a new intergranule. The photosphere is penetrated by narrow “channels”, by which energy of fluctuations tunnels with minimal losses into the higher atmosphere layers; such “channels” arise mostly between ascending and descending flows. Particularities of the wave propagation in the solar atmosphere are determined by relationship between wavelength and the effective size of inhomogeneities.