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Nonlinear analysis of decimetric solar bursts

Published online by Cambridge University Press:  26 February 2010

Reinaldo R. Rosa ,
Mauricio J. A. Bolzan ,
Francisco C. R. Fernandes ,
H. S. Sawant  and
Marian Karlický
Reinaldo R. Rosa
Affiliation:
LAC and DAS, Instituto Nacional de Pesquisas Espaciais (INPE), São José dos Campos, Brazil email: reinaldo@lac.inpe.br
Mauricio J. A. Bolzan
Affiliation:
IPD, Universidade do Vale do Paraiba, São José dos Campos, SP, Brazil email: mauricio.bolzam@pq.cnpq.br
Francisco C. R. Fernandes
Affiliation:
IPD, Universidade do Vale do Paraiba, São José dos Campos, SP, Brazil email: mauricio.bolzam@pq.cnpq.br
H. S. Sawant
Affiliation:
LAC and DAS, Instituto Nacional de Pesquisas Espaciais (INPE), São José dos Campos, Brazil email: reinaldo@lac.inpe.br
Marian Karlický
Affiliation:
Ondrejov Observatory, Czech Republic
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Abstract

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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.

Keywords

turbulenceSun: radio radiationsolar-terrestrial relationsmethods: data analysis
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S264: Solar and Stellar Variability: Impact on Earth and Planets , August 2009 , pp. 279 - 281
Copyright
Copyright © International Astronomical Union 2010

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