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Oscillatory processes in solar flares View all abstracts by submitter

Valery Nakariakov   Submitted: 2010-10-05 07:21

Electromagnetic (radio, visible-light, UV, EUV, X-ray and gamma-ray) emission generated by solar and stellar flares often contains pronounced quasi-periodic pulsations (QPP). Physical mechanisms responsible for the generation of long-period QPP (with the periods longer than one second) are likely to be associated with MHD processes. The observed modulation depths, periods and anharmonicity of QPP suggest that they can be linked with some kind of MHD auto-oscillations, e.g. an oscillatory regime of magnetic reconnection. Such regimes, of both spontaneous and induced nature, have been observed in resistive-MHD numerical simulations. The oscillations are essentially nonlinear and non-stationary. We demonstrate that a promising novel method for their analysis is the Empirical Mode Decomposition technique.

Authors: Authors: V.M. Nakariakov, A.R. Inglis, I.V. Zimovets, C. Foullon, E. Verwichte, R. Sych, I. N. Myagkova
Projects: RHESSI

Publication Status: Plasma Phys. Controlled Fusion (in press)
Last Modified: 2010-10-05 08:00
Go to main E-Print page  The State of Self-Organized Criticality of the Sun During the Last Three Solar Cycles. II. Theoretical Model   Evidence for a current sheet forming in the wake of a Coronal Mass Ejection from multi-viewpoint coronagraph observations  Edit Entry  Download Preprint  Submitter's Homepage Delete Entry 

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