DOI: https://doi.org/10.30970/jps.08.279
OSCILLATIONS IN SOLAR ATMOSPHERIC STRUCTURES
R. I. Kostik, E. Khomenko
Main Astronomical Observatoy, NASU, 27 Zabolotnogo Str., Kyiv, UA–03680, Ukraine
|
Journal of Physical Studies 8(3), 279–295 (2004)
DOI: https://doi.org/10.30970/jps.08.279 OSCILLATIONS IN SOLAR ATMOSPHERIC STRUCTURESR. I. Kostik, E. Khomenko Main Astronomical Observatoy, NASU, 27 Zabolotnogo Str., Kyiv, UA–03680, Ukraine |
|
The close proximity of the Sun makes it a uniquely observable star. The resolution of modern solar telescopes (both ground- and space-based) reaches 0.\arcsec1, equivalent to 100 km on the solar disk, opens up new opportunities for studying the fine structure of the solar atmosphere, such as granulation, local oscillations, and the structure and variations of the magnetic field in quiet and active regions. The present paper gives an overview of the results of investigations of photospheric oscillations and their interaction with local structures (granulation and sunspots) in the Sun's atmosphere. We focus our discussion on the following topics: the effects of waves on spectral line profiles, the excitation mechanisms of oscillations, the hypothesis of local acoustic sources, the modulation of waves by the convective structure of the solar atmosphere, and observations and modeling of oscillations in sunspots. Finally, a short list of open questions is given.
PACS number(s): 96.60.Ly, 96.60.Mz, 96.60.Qc, 95.30.Lz, 5.30.Qd