Conference proceeding
Detection of jovian kilometric and hectometric auroral radio harmonics with juno/waves in situ measurements
Planetary, Solar and Heliospheric Radio Emissions, Vol.X
Planetary, Solar and Heliospheric Radio Emissions X
2026
DOI: 10.25935/prex-tr41
Abstract
Auroral radio emissions from Earth, Saturn, and Jupiter are now known to all be generated by the cyclotron maser instability near the electron cyclotron fundamental frequency f_ce. This common generation mechanism results in similar wave properties in terms of beaming and polarization. However, while harmonics at 2 × f_ce and 3 × f_ce have been identified in the terrestrial and kronian cases, none of the components of Jupiter’s auroral radio spectrum had been associated with harmonics. In this study, we confirm the existence of first harmonic emissions for the Jovian broadband-kilometric (bKOM) and hectometric (HOM) components (200-700 kHz) in 6 cases using in situ data from Juno/Waves observations close to the source. Among these cases, 2 second harmonics were also identified. These harmonics are three orders of magnitude weaker than the associated fundamental and were identified in regions where the f_pe/f_ce(f_pe the electron plasma frequency) ratio is of the order of 10^-2. This discovery confirms the universality of the CMI and suggests that harmonics in the decametric range could exist.
Details
- Title: Subtitle
- Detection of jovian kilometric and hectometric auroral radio harmonics with juno/waves in situ measurements
- Creators
- B. Collet - Tohoku UniversityL. Lamy - Centre National de la Recherche ScientifiqueW. Kurth - University of IowaS. Wu - University of SouthamptonF. Allegrini - The University of Texas at San AntonioJ. Connerney - Space Systems Research Corporation
- Resource Type
- Conference proceeding
- Publication Details
- Planetary, Solar and Heliospheric Radio Emissions, Vol.X
- Conference
- Planetary, Solar and Heliospheric Radio Emissions X
- DOI
- 10.25935/prex-tr41
- Publisher
- OSU Pythéas/AMU
- Language
- English
- Date published
- 2026
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9985139494402771
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