Spectrum of Fluctuations of Solar Noise Storms |
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| Authors: | Y F Yurovsky |
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| Institution: | (1) SRI Crimean Astrophysical Observatory, RT-22, Katsively, 98688 Crimea, Ukraine |
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| Abstract: | The calculation of the Fourier transform of noise storm (NS) fluctuations showed that the power spectrum was adequately described
by the expression G(F)∼1/F. Our results rule out the possibility that NS radiation is formed from random, short-term bursts (so-called type I bursts),
since the spectrum of the sum of random short fluctuations is flat, but the real NS has a hyperbolic spectrum. This spectrum
is monotonic and does not contain any components that exceed the level of the statistical fluctuations (i.e., the results of observations do not reveal the presence of periodic or resonant properties of the emission source). The hyperbolic
shape of the spectrum shows that the main energy of a NS is contained in the slower temporal fluctuations. |
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| Keywords: | Sun: noise storm |
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