SOHO CoRoT Kepler Picard SDO GONG

Solar flares and temporal changes in subsurface vorticity measurements


Komm Rudi


National Solar Observatory


Local helioseismology
Auteur(s) supplémentaire(s)K. Jain, A. Reinard, R. Howe, F. Hill
Institution(s) supplémentaire(s)University of Colorado / NOAA Space Weather Prediction Center


Previous studies have shown that the flare activity of solar active regions is intrinsically linked with the vorticity of solar subsurface flows on spatial scales comparable to the size of active regions and on temporal scales from days to the lifetime of active regions. We derive the vorticity vector and the kinetic helicity of subsurface flows applying ring-diagram analysis to Global Oscillation Network Group (GONG) data. We are studying the temporal evolution of these subsurface quantities and their relation to magnetic flux and flare activity of active regions focusing on: (1) improving the parameterization of the relation; (2) testing shorter time series (8 hours). We will present the latest results.
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