Identification of coupled Landau and anomalous resonances in space plasmas
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arXiv
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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866910532960780288 |
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| author | Li, Jing-Huan Zhou, Xu-Zhi Liu, Zhi-Yang Wang, Shan Artemyev, Anton V. Omura, Yoshiharu Zhang, Xiao-Jia Li, Li Yue, Chao Zong, Qiu-Gang Pollock, Craig Le, Guan Burch, James L. |
| author_facet | Li, Jing-Huan Zhou, Xu-Zhi Liu, Zhi-Yang Wang, Shan Artemyev, Anton V. Omura, Yoshiharu Zhang, Xiao-Jia Li, Li Yue, Chao Zong, Qiu-Gang Pollock, Craig Le, Guan Burch, James L. |
| contents | Wave-particle resonance, a ubiquitous process in the plasma universe, occurs when resonant particles observe a constant wave phase to enable sustained energy transfer. Here, we present spacecraft observations of simultaneous Landau and anomalous resonances between oblique whistler waves and the same group of protons, which are evidenced, respectively, by phase-space rings in parallel-velocity spectra and phase-bunched distributions in gyro-phase spectra. Our results indicate the coupling between Landau and anomalous resonances via the overlapping of the resonance islands. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_16065 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Identification of coupled Landau and anomalous resonances in space plasmas Li, Jing-Huan Zhou, Xu-Zhi Liu, Zhi-Yang Wang, Shan Artemyev, Anton V. Omura, Yoshiharu Zhang, Xiao-Jia Li, Li Yue, Chao Zong, Qiu-Gang Pollock, Craig Le, Guan Burch, James L. Space Physics Plasma Physics Wave-particle resonance, a ubiquitous process in the plasma universe, occurs when resonant particles observe a constant wave phase to enable sustained energy transfer. Here, we present spacecraft observations of simultaneous Landau and anomalous resonances between oblique whistler waves and the same group of protons, which are evidenced, respectively, by phase-space rings in parallel-velocity spectra and phase-bunched distributions in gyro-phase spectra. Our results indicate the coupling between Landau and anomalous resonances via the overlapping of the resonance islands. |
| title | Identification of coupled Landau and anomalous resonances in space plasmas |
| topic | Space Physics Plasma Physics |
| url | https://arxiv.org/abs/2405.16065 |