Physics
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...266..560d&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 266, no. 1, p. 560-567.
Physics
37
Phase Diagrams, Solar Atmosphere, Solar Oscillations, Solar Physics, Chromosphere, P Waves, Wave Propagation, Wave Reflection
Scientific paper
An overview of several new dynamic phenomena detected by means of velocity-brightness (V-I) and V-V phase diagrams is presented. The great diagnostic value of this kind of data analysis is demonstrated and used in order to develop a consistent description and interpretation of the surprisingly broad spectrum of linear hydrodynamic wave motions that occur in a stellar atmosphere. The significance of partial reflection and the role of forced oscillations in practically all layers of the solar atmosphere are demonstrated. With reference to the concept of continuous partial reflection, a model of the 'background' of coherent wave motions found at frequencies and wavenumbers in between the well-known p-mode ridges is presented.
Deubner Franz-Ludwig
Fleck Bernard
Schmitz Felix
Straus Th.
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