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Oscillatory processes in solar flares
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Nakariakov, V. M. (Valery M.), Inglis, Andrew R., Zimovets, I. V., Foullon, C. (Claire), Verwichte, E. (Erwin), Sych, R. and Myagkova, I. N. (2010) Oscillatory processes in solar flares. Plasma Physics and Controlled Fusion, Vol.52 (No.12, Pt.1). article no. 124009. doi:10.1088/0741-3335/52/12/124009 ISSN 0741-3335.
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Official URL: http://dx.doi.org/10.1088/0741-3335/52/12/124009
Abstract
Electromagnetic (radio, visible-light, UV, EUV, x-ray and gamma-ray) emission generated by solar and stellar flares often contains pronounced quasi-periodic pulsations (QPPs). Physical mechanisms responsible for the generation of long-period QPP (with periods longer than 1 s) 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.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Library of Congress Subject Headings (LCSH): | Solar flares, Solar oscillations, Electromagnetic waves, Magnetohydrodynamics | ||||
Journal or Publication Title: | Plasma Physics and Controlled Fusion | ||||
Publisher: | Institute of Physics Publishing Ltd. | ||||
ISSN: | 0741-3335 | ||||
Official Date: | December 2010 | ||||
Dates: |
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Volume: | Vol.52 | ||||
Number: | No.12, Pt.1 | ||||
Number of Pages: | 7 | ||||
Page Range: | article no. 124009 | ||||
DOI: | 10.1088/0741-3335/52/12/124009 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Funder: | Royal Society (Great Britain), Science and Technology Facilities Council (Great Britain) (STFC), Rossiĭskiĭ fond fundamentalʹnykh issledovaniĭ [Russian Foundation for Basic Research] (RFBR) | ||||
Grant number: | 10-02-01285-a (RFBR), 10-02-00153-a (RFBR) | ||||
Version or Related Resource: | Presented at: 37th European Physical Society Conference on Plasma Physics, Univ Campus, Dublin, Ireland, 22-25 Jun 2010 | ||||
Conference Paper Type: | Paper | ||||
Type of Event: | Conference |
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