Other
Scientific paper
Jun 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aspc..405..237d&link_type=abstract
Solar Polarization 5: In Honor of Jan Stenflo ASP Conference Series, Vol. 405, proceedings of the conference held 17-21 Septembe
Other
1
Scientific paper
Usually, an investigation of short-period variations (in the order of minutes to hours) of the large-scale magnetic fields of the Sun, including the mean magnetic field, has been restricted to spectral analysis of the time series of only one parameter -- an effective magnetic field strength B. However, it is of particular interest to explore a possible manifestation of oscillatory phenomena in the variations of other parameters, which has become possible to observe with spectropolarimetric methods. Here from the analysis of the long-term solar mean magnetic field Stokes-meter observations in several spectral lines simultaneously the conclusion is made that variations of B with periods 80, 60, and probably 35, 21, and 12 minutes are real. Oscillations with 5 minute period were not found in magnetic field strength variations, but they are present in variations of some other parameters. Some questions concerning the interpretation are discussed.
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