Nonlinear analysis of decimetric solar bursts

The solar radio emissions in the decimetric frequency range (above 1 GHz) are very rich in temporal and spectral fine structures due to nonlinear processes occurring in the magnetic structures on the corresponding active regions. In this paper we characterize the singularity spectrum, f(α), for sola...

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Bibliographic Details
Published in:Proceedings of the International Astronomical Union 2009-08, Vol.5 (S264), p.279-281
Main Authors: Rosa, Reinaldo R., Bolzan, Mauricio J. A., Fernandes, Francisco C. R., Sawant, H. S., Karlický, Marian
Format: Article
Language:English
Subjects:
Contributed Papers
Plasma
Radio astronomy
Solar physics
Turbulence
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Summary:The solar radio emissions in the decimetric frequency range (above 1 GHz) are very rich in temporal and spectral fine structures due to nonlinear processes occurring in the magnetic structures on the corresponding active regions. In this paper we characterize the singularity spectrum, f(α), for solar bursts observed at 1.6, 2.0 and 3 GHz. We interpret our findings as evidence of inhomogeneous plasma turbulence driving the underlying plasma emission process and discuss the nonlinear multifractal approach into the context of geoeffective solar active regions.
ISSN:1743-9213
1743-9221
DOI:10.1017/S174392130999278X