Arkhypov and Rucker 2014, "Dispersion-like phenomena in Jovian decametric S-bursts: Tabooed Facts"

I review Arkhypov and Rucker 2014, "Dispersion-like phenomena in Jovian decametric S-bursts: Tabooed Facts"
http://adsabs.harvard.edu/cgi-bin/bib_query?arXiv:1402.1966

Abstract: "The dominant viewpoint on Jovian decametric S-burst emission neglects the time delay of the radiation, although its base theory of electron cyclotron maser instability allows a significant decreasing of X-mode group velocity near the cutoff frequency at the bottom of source region. We searched for effects of the frequency-related delay of radiation in broadband Jovian radio storms consisting of periodic S-bursts (S-burst trains) at 16 to 30 MHz. It was found that up to 1% of bursts in a train are of distorted meandering shape in dynamic spectrum, where the emission from one radio source was observed at several frequencies simultaneously. It is difficult to explain such spectra in terms of radio waves beaming or causality without significant frequency-related delay of radio emission. We found experimentally that the frequency drift rate of middle lines of such events coincides with the drift rate of disturbances in common S-bursts. This indicates a general distortion of the dynamic spectrum of S-bursts. As a result, the correlation method for the measurement of the spectral distortion is proposed. Using this method, we found the approximation coefficients for the distortion in 32 spectra of 8 Io-B storms. The corrected spectra formally show that S-burst trains do not move mainly outward from Jupiter, as it is usually assumed, but fly in the opposite direction. Our simulation confirms that the dispersion is capable in principle to reproduce the found spectral distortion. Hence, the dispersion-like phenomena in Jovian S-bursts deserve discussion because they have no satisfactory explanations in terms of traditional approach."

Oya et al. 2002, "Analyses Of Jovian Decametric Radiation S-Bursts Interacting With N-Bursts"

I review Oya, Masaru; Oya, Hiroshi; Ono, Takayuki; Iizima, Masahide; 2002, "Analyses Of Jovian Decametric Radiation S-Bursts Interacting With N-Bursts"
http://adsabs.harvard.edu/abs/2002EM%26P...88..187O

Abstract: "Dynamic spectra of S-bursts of Jovian decametric radiations are obtained by using a high time resolution radio spectrograph which has a time resolution of 2 msec and the bandwidth of 2 MHz. Within occurrence of 65 S-burst events observed in the period from 1983 to 1999, 26 events have been identified as the S-N burst events, which are characterized by the interaction between the S-burst emissions and the Narrow band emissions. In the dynamic spectra of the S-N burst, the trend of emissions with negative and slower frequency drift named as “Trailing Edge Emission” are often observed shortly after the appearance of the S-burst. Detailed analyses of these phenomena revealed that the Trailing Edge Emission is not a manifestation of S-burst with slower drift rate but a variation of N-burst. The results suggested that S-burst and the associated Trailing Edge Emission are formed simultaneously started from a common region with different drift rates. It has been further suggested that the appearance of the S-bursts is not controlled by the geometrical effect between the source region and the observer, but directly reflects the generation of the source region widely distributed in an altitude range from a few thousands km to 30,000 km, along the Io flux tube."