Full-disk magnetic oscillations in the solar photosphere

Details Full-disk magnetic oscillations in the solar photosphere Full-disk magnetic oscillations in the solar photosphere

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003a%26a...403..297m&link_type=abstract

Astronomy and Astrophysics, v.403, p.297-302 (2003)

Astronomy and Astrophysics

Astrophysics

4

Sun: Oscillations, Sun: Magnetic Fields

Scientific paper

Photospheric observations of the magnetic oscillations have been carried out to research magneto-acoustic waves in spots. The coupling between the magnetic field and the p-modes has been studied using reduced areas on the solar disk, but a global scenario is still missing. Four hour full-disk magnetograms (at 4 arcsec/pix spatial resolution) obtained in the sodium D-lines were analysed pixel-by-pixel (locally) and using the spherical harmonics decomposition (globally). Magnetic oscillations were detected at different frequencies and identified on the solar disk. The global properties of the magnetic oscillations, shown via the l -nu diagrams, are for the first time presented and discussed.

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