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A flux comparison of northern and southern Saturn kilometric radio bursts during southern summer

    Y. KASABA, T. KIMURA, D. MARUNO, A. MORIOKA, B. CECCONI, L. LAMY, C. M. JACKMAN, C. TAO, H. KITA, H. MISAWA, T. TSUCHIYA, A. KUMAMOTO

Planetary Radio Emissions VIII, pp. 205-216, 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/PRE8s205

doi: 10.1553/PRE8s205

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doi:10.1553/PRE8s205



doi:10.1553/PRE8s205

Abstract

The energy flux of the northern (N–) and southern (S–) Saturn kilometric radiation (SKR) bursts are statistically compared. We investigated the N– and S–SKR bursts from 2005 DOY 250 to 2006 DOY 200, when Cassini was close to the equatorial plane and RPWS could simultaneously observe both N– and S–SKR. We identified 38 burst events, and compared their flux from southern (summer–side) and northern (winter–side) hemispheres. In the main band (100–400 kHz), S–SKR bursts from the summer–side hemisphere were 5–6 times stronger than the N–SKR bursts from the winter–side. This is not far from the flux ratio in the non-burst status. In the low-frequency extension (10–50 kHz) of SKR bursts, this ratio is smaller, about 2–3 times.