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Corotation-bounce resonance of ions in Jupiter's magnetosphere

Authors :
Sarkango, Y.
Szalay, J. R.
Damiano, P. A.
Sulaiman, A. H.
Delamere, P. A.
Saur, J.
McComas, D. J.
Ebert, R. W.
Allegrini, F.
Publication Year :
2024

Abstract

Banded energy distributions of H$^{+}$, O$^{++}$, S$^{+++}$, and O$^+$ or S$^{++}$ ions between 100 eV to ~20 keV are consistently observed in Jupiter's magnetosphere mapping to M-shells between M=10-20. The bands correspond to flux enhancements at similar speeds for different ion species, providing the first evidence of simultaneous bounce-resonant acceleration of multiple ion species in Jupiter's magnetosphere. Ion enhancements occur for energies at which the bounce frequencies of the trapped ions matched integer harmonics of the System-III corotation frequency. The observations highlight a previously unknown interaction between corotation and bounce motion of <10 keV energy ions that is a fundamental and persistent process occurring in Jupiter's magnetosphere.

Details

Database :
arXiv
Publication Type :
Report
Accession number :
edsarx.2410.17304
Document Type :
Working Paper