Separation of drifting pulsating structures in a complex radio spectrum of the 2001 April 11 event

Aims. We present new method of separating a complex radio spectrum into single radio bursts. The method is used in the analysis of the 0.8–2.0 GHz radio spectrum of the 2001 April 11 event, which was rich in drifting pulsating structures. Methods. The method is based on the wavelet analysis techniqu...

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Bibliographic Details
Published in:Astronomy and astrophysics (Berlin) 2011-01, Vol.525, p.A88
Main Authors: MESZAROSOVA, H, RYBAK, J, KARLICKY, M
Format: Article
Language:English
Subjects:
Astronomy
Earth, ocean, space
Exact sciences and technology
Sun: corona
Sun: flares
Sun: oscillations
Sun: radio radiation
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Summary:Aims. We present new method of separating a complex radio spectrum into single radio bursts. The method is used in the analysis of the 0.8–2.0 GHz radio spectrum of the 2001 April 11 event, which was rich in drifting pulsating structures. Methods. The method is based on the wavelet analysis technique, which separates different spatial-temporal components (radio bursts) that are difficult to recognize in the original radio spectrum. Results. We show with this method that the complex radio spectrum observed during the 2001 April 11 event consists of at least four drifting pulsating structures (DPSs). These structures were separated with respect to their different frequency drifts. The DPSs indicate at least four plasmoids that are supposed to be formed in a flaring current sheet.
ISSN:0004-6361
1432-0746
DOI:10.1051/0004-6361/201015476