Jupiter's Whistler-Mode Belts and Electron Slot Region

被引：2

作者：

Hao, Y. -x. ^{[1
,2
]}

Shprits, Y. Y. ^{[1
,3
,4
]}

Menietti, J. D. ^{[5
]}

Liu, Z. Y. ^{[6
]}

Averkamp, T. ^{[5
]}

Wang, D. D. ^{[1
]}

Kollmann, P. ^{[7
]}

Hospodarsky, G. B. ^{[5
]}

Drozdov, A. ^{[4
]}

Roussos, E. ^{[2
]}

Krupp, N. ^{[2
]}

Horne, R. B. ^{[8
]}

Woodfield, E. E. ^{[8
]}

Bolton, S. J. ^{[9
]}

机构：

[1] GFZ German Res Ctr Geosci, Potsdam, Germany

[2] Max Planck Inst Solar Syst Res, Gottingen, Germany

[3] Univ Potsdam, Inst Phys & Astrophys, Potsdam, Germany

[4] Univ Calif Los Angeles, Los Angeles, CA USA

[5] Univ Iowa, Dept Phys & Astron, Iowa City, IA USA

[6] Univ Toulouse III Paul Sabatier, IRAP, CNRS, Toulouse, France

[7] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA

[8] British Antarctic Survey, Cambridge, England

[9] Southwest Res Inst, Space Sci & Engn Div, San Antonio, TX USA

来源：

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS | 2024年 / 129卷 / 12期

基金：

美国国家航空航天局; 英国科学技术设施理事会;

关键词：

RADIATION BELTS; AURORAL HISS; CHORUS; MAGNETOSPHERE; ACCELERATION; ASYMMETRY; ENERGIES; ORIGIN; FIELD;

D O I：

10.1029/2024JA032850

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 9<M<16. 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.

引用

页数：12

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