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Properties of groups of solar S-bursts in the decameter band

    V. DOROVSKYY, V. MELNIK, A. KONOVALENKO, A. BRAZHENKO, S. POEDTS, H. RUCKER, M. PANCHENKO

Planetary Radio Emissions VIII, pp. 369-378, 2018/08/16

Proceedings of the 8th International Workshop on Planetary, Solar and Heliospheric Radio Emissions held at Seggauberg near Graz, Austria, October 25–27, 2016

doi: 10.1553/PRE8s369

doi: 10.1553/PRE8s369

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doi:10.1553/PRE8s369



doi:10.1553/PRE8s369

Abstract

On 9 July 2013 from 5:30 UT till 13:28 UT more than 1000 S-bursts were recorded by the Ukrainian radio telescope UTR-2 operated in the frequency band 9–32 MHz. All S-bursts were low intensity events with an average flux of about 10 s.f.u. and a minimum flux as low as 0.2 s.f.u. which made their detection with small instruments practically impossible. New methods of observations allowed to retrieve the weakest S-bursts with fluxes comparable to the background level. The durations and frequency drift rates of these bursts as well as the dependencies of these parameters on frequency were found. The obtained results complement the analysis by Morosan et al. [2015] with data at lowest frequencies accessible for ground-based observations.