Spatial stratification of acoustic oscillations in the solar photosphere
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 an...
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| Published in: | Кинематика и физика небесных тел |
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| Date: | 2005 |
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| Format: | Article |
| Language: | English |
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Головна астрономічна обсерваторія НАН України
2005
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| Subjects: | |
| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/79617 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | 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. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | 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.
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| ISSN: | 0233-7665 |