New Detection of Acoustic Signatures from Solar Flares

Details New Detection of Acoustic Signatures from Solar Flares New Detection of Acoustic Signatures from Solar Flares

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..354..204d&link_type=abstract

Solar MHD Theory and Observations: A High Spatial Resolution Perspective ASP Conference Series, Vol. 354, Proceedings of the Con

Physics

6

Scientific paper

With the advancement of local helioseismic techniques such as helioseismic holography we have now detected numerous seismic sources of varying size and intensity produced by solar flares. We have performed a systematic survey of the SOHO-MDI database in search for seismic waves from X-class flares produced during 1996 -- 2005. The detection of acoustically active flares
has opened a new and promising connection between helioseismology and flare physics. The main question we ask is: why are some large flares acoustically active while most are acoustically inactive?
We also address questions such as: Is photospheric heating by high-energy protons a major factor in seismic emission from flares? What is the effect of magnetic fields in the acoustics of a flare?

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