Jupiter's Whistler-mode Belts and Electron Slot Region

Hao, Yixin; Shprits, Yuri Y.; Menietti, Doug; Liu, Z.-Y.; Averkamp, Terrance F.; Wang, Dedong; Kollmann, Peter; Hospodarsky, George Blair; Drozdov, Alexander Yurievich; Roussos, Elias; Krupp, Norbert; Horne, Richard B. ORCID: https://orcid.org/0000-0002-0412-6407; Woodfield, Emma E. ORCID: https://orcid.org/0000-0002-0531-8814; Bolton, Scott J.. 2024 Jupiter's Whistler-mode Belts and Electron Slot Region. Journal of Geophysical Research: Space Physics, 129 (12), e2024JA032850. 12, pp. 10.1029/2024JA032850

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Text (Open Access) ©2024. The Author(s). This is an open access article under the terms of the Creative Commons Attribution License, which permits use,distribution and reproduction in any medium, provided the original work is properly cited. JGR Space Physics - 2024 - Hao - Jupiter s Whistler‐Mode Belts and Electron Slot Region.pdf - Published Version Available under License Creative Commons Attribution 4.0. Download (3MB) | Preview

Abstract/Summary

The spatial distribution of whistler-mode wave emissions in the Jovian magnetosphere measured during the first 45 perijove orbits of Juno is investigated. A double-belt structure in whistler-mode wave intensity is revealed. Between the two whistler-mode belts, there exists a region devoid of 100 s keV electrons near the magnetic equator at . Insufficient source electron population in such an electron “slot” region is a possible explanation for the relatively lower wave activity compared to the whistler-mode belts. The wave intensity of the outer whistler-mode belt measured in the dusk-premidnight sector is significantly stronger than in the postmidnight-dawn sector. We suggest that the inherent dawn-dusk asymmetries in source electron distribution and/or auroral hiss emission rather than the modulation of solar cycle are more likely to result in the azimuthal variation of outer whistler-mode belt intensity during the first 45 Juno perijove orbits.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1029/2024JA032850
ISSN:	2169-9380
Additional Keywords:	galileon moons; jupiter; radiation belt; wave-particle interaction; whistler-mode waves
Date made live:	09 Dec 2024 11:18 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/537134

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