Results of the Phobos-2 study of solar brightness oscillations

Details Results of the Phobos-2 study of solar brightness oscillations Results of the Phobos-2 study of solar brightness oscillations

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pazh...16..330b&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 16, April 1990, p. 330-342. In Russian. In Russian.

Astronomy and Astrophysics

Astronomy

1

Brightness Distribution, Solar Activity, Solar Oscillations, Solar Spectra, Stellar Luminosity, Fine Structure, Line Spectra, Power Spectra, Satellite Observation, Stochastic Processes

Scientific paper

Phobos-2 observations indicate that the variations in the power spectrum of 5-min oscillations of the sun appear independently for each of the modes and have the character of 4-5-hour amplitude bursts. In general, the power spectrum lines reveal both quiet and active periods. The quiet periods are characterized by a brightness burst amplitude of (1.5-2) x 10 to the -7th and have a lifetime from about 10 hours to a few days. The active spectrum consists of a single burst or a sequence of bursts with an amplitude 30-50 times higher and lasting from a few hours to one day.

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