Oscillatory Power Distribution in Full-disk Magnetograms

Details Oscillatory Power Distribution in Full-disk Magnetograms Oscillatory Power Distribution in Full-disk Magnetograms

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009spd....40.0928h&link_type=abstract

American Astronomical Society, SPD meeting #40, #9.28; Bulletin of the American Astronomical Society, Vol. 41, p.822

Astronomy and Astrophysics

Astronomy

Scientific paper

It has been shown that the interaction of p-modes with the magnetic field modifies the mode's characteristics. The power around the 5-minute band is absorbed while there is an enhancement at higher frequencies. Here we present recent results showing an inhomogeneous power distribution in magnetic oscillations which may be useful in characterizing the energy transport mechanisms in the upper solar atmosphere. We use data from the high-cadence GONG magnetograms during the low-activity phase of the solar cycle and compare our results with simultaneous velocity oscillations.

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