AIA Observations of Sunspot Waves

Details AIA Observations of Sunspot Waves AIA Observations of Sunspot Waves

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011spd....42.2115l&link_type=abstract

American Astronomical Society, SPD meeting #42, #21.15; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

Waves in the low solar atmosphere above sunspots i) present an interesting phenomenon in their own right, ii) are potentially a probe of magnetic structures (e.g. "plumes") in the sunspot atmosphere and a source of excitation of higher, coronal loop waves, and iii) are coupled to umbral flashes and sub-surface, helioseismic waves in a manner that is not fully understood. We present an analysis of AIA observations of waves in AR 11092, showing their propagation, temporal coherence, and angular symmetry; characterizing them in terms of frequency, amplitude, and propagation speed.

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