Resonant absorption and the spectrum of 5-min oscillations of the Sun.

Details Resonant absorption and the spectrum of 5-min oscillations of the Sun. Resonant absorption and the spectrum of 5-min oscillations of the Sun.

Jun 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...322..302z&link_type=abstract

Astronomy and Astrophysics, v.322, p.302-306

Astronomy and Astrophysics

Astrophysics

8

Sun: Oscillations, Chromosphere, Mhd

Scientific paper

Magnetic field influence on 5-min solar oscillations spectrum is investigated. Proper oscillations spectrum is calculated for the model of the shell with linear temperature profile in the bottom layer while the top layer is exemplified by homogeneous magnetic field and sharp temperature increase, reaching the coronal value at the height about ~2500km. It is shown, that taking into account of acoustic energy absorption at Alfven resonant levels in the chromosphere one can provide an explanation for existing discrepancies between the observed and theoretically calculated frequencies of the 5-min oscillations.

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