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Quasilinear Wave-Particle Analysis in the Source Region of Jovian Kilometric Radio Emission
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Quasilinear Wave-Particle Analysis in the Source Region of Jovian Kilometric Radio Emission

Peter H. Yoon, J. Douglas Menietti, Frederic Allegrini, William S. Kurth, Jeremy B. Faden, George B. Hospodarsky, Jack E. P. Connerney and Scott J. Bolton
Zenodo
09/17/2025
DOI: 10.5281/zenodo.17144708
url
https://doi.org/10.5281/zenodo.17144708View
Open Access

Abstract

This is the supporting data set for the paper by the same title published in AGU JGR Space Physics. Key Points: Upward-traveling electron loss-cone distribution together with counter-streaming electron beam and hot protons are detected in bKOM source region. Kilometric emission is measured accompanied by ion-cyclotron frequency range emission and weak whistler mode-like signature. The observed wave spectra and particle characteristics are modeled by employing quasilinear wave-particle analysis. Abstract Jovian broadband kilometric emission (bKOM) is observed by the Juno spacecraft within a source region in the northern hemisphere near the equatorward edge of the auroral oval.  A well-developed upward loss cone is the free-energy source of the bKOM. The spacecraft also detected intense low-energy (few hundred eV) counter-streaming electrons which are known to generate whistler mode emission via Landau resonance. In addition, hot protons (tens of keV thermal energy) accompanied by Alfvénic low-frequency emissions are also frequently detected in these source regions. We use quasilinear analysis to examine the generation and growth of bKOM and the dynamics of wave-particle interaction of the electron beams with bKOM and the growth of whistler mode and Z-mode emission. We also carry out quasilinear analysis of protons interacting with the low-frequency modes that coexist in the bKOM source region. The comprehensive quasilinear wave-particle analysis involving the energetic loss-cone electrons and high-frequency bKOM emission; counter-streaming electron beams and low-frequency/low-intensity electrostatic modes, and hot protons and Alfvén/proton-cyclotron wave emission, are shown to be quite successful in explaining/replicating the observed wave emission characteristics and various charged-particle properties.

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