Chaos theory and radio emission

Details Chaos theory and radio emission Chaos theory and radio emission

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ssrv...68..171k&link_type=abstract

Space Science Reviews, Volume 68, Issue 1-4, pp. 171-184

Computer Science

6

Radio Emission Of The Sun, Solar Bursts, Data Analysis, Nonlinear Dynamics

Scientific paper

The application of chaos theory has become popular to understand the nature of various features of solar activity because most of them are far from regular. The usual approach, however, that is based on finding low-dimensional structures of the underlying processes seems to be successful only in a few exceptional cases, such as in rather coherent phenomena as coronal pulsations. It is important to note that most phenomena in solar radio emission are more complex. We present two kinds of techniques from nonlinear dynamics which can be useful to analyse such phenomena:
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Fragmentation processes observed in solar spike events are studied by means of symbolic dynamics methods. Different measures of complexity calculated from such observations reveal that there is some order in this fragmentation.
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Bursts are a typical transient phenomenon. To study energization processes causing impulsive microwave bursts, the wavelet analysis is applied. It exhibits structural differences of the pre- and post-impulsive phase in cases where the power spectra of both are not distinct.

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