Gradient pattern analysis of short solar radio bursts

Details Gradient pattern analysis of short solar radio bursts Gradient pattern analysis of short solar radio bursts

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008adspr..42..844r&link_type=abstract

Advances in Space Research, Volume 42, Issue 5, p. 844-851.

Mathematics

Logic

5

Scientific paper

We analyze the weak component of the localized temporal pattern variability of 3 GHz solar burst observed by the Ondrejov radiospectrograph. A complex, short and weak impulsive sample from the time series was analyzed by applying a method based on the gradient pattern analysis and discrete wavelet decomposition. By analyzing canonical temporal variability patterns we show that the new method can reliably characterize the phenomenological dynamical process of short time series (N ⩽ 103 measurements) as the radio burst addressed here. In the narrowest sense, by estimating the mutual information distance in the gradient spectra, we show that the fluctuation pattern of the short and weak 3 GHz impulsive solar burst, with energetic amplitudes <350 SFU, is closer to the intermittent and strong MHD turbulent variability pattern.

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