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Jupiter's Io-C and Io-B decametric emission source morphology from LWA1 data analysis

    K. IMAI, C. A. HIGGINS, M. IMAI, T. E. CLARKE

Planetary Radio Emissions VIII, pp. 89-102, 2018/08/14

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/PRE8s89

doi: 10.1553/PRE8s89

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doi:10.1553/PRE8s89



doi:10.1553/PRE8s89

Abstract

The information about Jupiter’s decametric radio source locations is a very important key to understand the emission mechanism. By using the modulation lanes in the dynamic spectra of Jupiter’s decametric emissions we developed a remote sensing tool to investigate Jupiter’s radio source locations. This modulation lane method provides a very unique opportunity to know the source locations. Recently we have used it with data taken by the Long Wavelength Array Station 1 (LWA1). The high sensitivity of the LWA1 allows us to measure the slope of the modulation lanes more precisely for many Io–related sources in comparison to previous observations. The source locations and beam parameters can be calculated by these slope measurements. In this analysis we found the existence of two independent radio sources in the case of Io-C and Io-B events. We named the new components Io-C’ (Io-C–prime) and Io-B’ (Io-B–prime).