A survey in WL and HXR emission on the energetic solar flares ocurred during the beginning of the 24 solar cycle and their possible relation with the generation of seismic signals
Abstract
Solar flares are explosive phenomena, thought to be driven by magnetic free energy accumulated in the solar corona. Some flares release seismic transients, "sunquakes", into the Sun's interior. Different mechanism are being considered to explain how sunquakes are generated. We are conducting a survey of HXR, white-light and seismic emission from X- and M-class flares in the early ascending phase of solar cycle 24. Seismic diagnostics are based upon standard time-distance techniques, including seismic holography, applied to Dopplergrams obtained by HMI/SDO and GONG. The relation between HXR and white-light emissions may carry important information on impulsive chromospheric heating during flares, a prospective contributor to seismic transient emission, at least in some instances.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2012
- Bibcode:
- 2012AGUFMSH43B2163B
- Keywords:
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- 7514 SOLAR PHYSICS;
- ASTROPHYSICS;
- AND ASTRONOMY / Energetic particles;
- 7519 SOLAR PHYSICS;
- ASTROPHYSICS;
- AND ASTRONOMY / Flares;
- 7522 SOLAR PHYSICS;
- ASTROPHYSICS;
- AND ASTRONOMY / Helioseismology;
- 7554 SOLAR PHYSICS;
- ASTROPHYSICS;
- AND ASTRONOMY / X-rays;
- gamma rays;
- and neutrinos