Kinetic-hybrid Simulations of Counterpropagating Ion Cyclotron Waves and Proton Scattering in the Near-Sun Solar Wind
Ion cyclotron waves (ICWs) are prevalent in the near-Sun solar wind and play a significant role in the nonadiabatic heating of plasma. Recent observations from the Parker Solar Probe have revealed the simultaneous presence of antisunward and sunward ICWs in the vicinity of the Alfvén surface. Howeve...
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IOP Publishing
2025-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/adbc6a |
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| author | Yifan Wu Chen Shi Xin Tao Jinsong Zhao |
| author_facet | Yifan Wu Chen Shi Xin Tao Jinsong Zhao |
| author_sort | Yifan Wu |
| collection | DOAJ |
| description | Ion cyclotron waves (ICWs) are prevalent in the near-Sun solar wind and play a significant role in the nonadiabatic heating of plasma. Recent observations from the Parker Solar Probe have revealed the simultaneous presence of antisunward and sunward ICWs in the vicinity of the Alfvén surface. However, single-satellite observations cannot effectively trace the generation and evolution of these observed waves. To address this limitation, we employ kinetic-hybrid simulations to replicate the generation and evolution of counterpropagating ICWs under typical plasma conditions in the near-Sun solar wind. Following the linear growth phase, the simulated waves exhibit amplitude and polarization characteristics that closely match the observations. Additionally, our simulation illustrates proton scattering induced by the counterpropagating waves. These results underscore the significance of locally generated ICWs in influencing solar wind ion dynamics. |
| format | Article |
| id | doaj-art-e297f8fd27bf474c9864b2c0658b607a |
| institution | DOAJ |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj-art-e297f8fd27bf474c9864b2c0658b607a2025-08-20T03:08:20ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-01983210710.3847/1538-4357/adbc6aKinetic-hybrid Simulations of Counterpropagating Ion Cyclotron Waves and Proton Scattering in the Near-Sun Solar WindYifan Wu0https://orcid.org/0000-0002-2039-0590Chen Shi1https://orcid.org/0000-0002-9166-1036Xin Tao2https://orcid.org/0000-0002-4676-8133Jinsong Zhao3https://orcid.org/0000-0002-3859-6394CAS Key Laboratory of Geospace Environment, Department of Geophysics and Planetary Sciences, University of Science and Technology of China , Hefei, People’s Republic of China ; xtao@ustc.edu.cn; CAS Center for Excellence in Comparative Planetology , Hefei, People’s Republic of ChinaSchool of Physics and Electronic Sciences, Changsha University of Science and Technology , Changsha, People’s Republic of ChinaCAS Key Laboratory of Geospace Environment, Department of Geophysics and Planetary Sciences, University of Science and Technology of China , Hefei, People’s Republic of China ; xtao@ustc.edu.cn; CAS Center for Excellence in Comparative Planetology , Hefei, People’s Republic of ChinaPurple Mountain Observatory, Chinese Academy of Sciences , Nanjing, People’s Republic of China ; js_zhao@pmo.ac.cn; School of Astronomy and Space Science, University of Science and Technology of China , Hefei, People’s Republic of ChinaIon cyclotron waves (ICWs) are prevalent in the near-Sun solar wind and play a significant role in the nonadiabatic heating of plasma. Recent observations from the Parker Solar Probe have revealed the simultaneous presence of antisunward and sunward ICWs in the vicinity of the Alfvén surface. However, single-satellite observations cannot effectively trace the generation and evolution of these observed waves. To address this limitation, we employ kinetic-hybrid simulations to replicate the generation and evolution of counterpropagating ICWs under typical plasma conditions in the near-Sun solar wind. Following the linear growth phase, the simulated waves exhibit amplitude and polarization characteristics that closely match the observations. Additionally, our simulation illustrates proton scattering induced by the counterpropagating waves. These results underscore the significance of locally generated ICWs in influencing solar wind ion dynamics.https://doi.org/10.3847/1538-4357/adbc6aSolar windPlasma physicsSpace plasmas |
| spellingShingle | Yifan Wu Chen Shi Xin Tao Jinsong Zhao Kinetic-hybrid Simulations of Counterpropagating Ion Cyclotron Waves and Proton Scattering in the Near-Sun Solar Wind The Astrophysical Journal Solar wind Plasma physics Space plasmas |
| title | Kinetic-hybrid Simulations of Counterpropagating Ion Cyclotron Waves and Proton Scattering in the Near-Sun Solar Wind |
| title_full | Kinetic-hybrid Simulations of Counterpropagating Ion Cyclotron Waves and Proton Scattering in the Near-Sun Solar Wind |
| title_fullStr | Kinetic-hybrid Simulations of Counterpropagating Ion Cyclotron Waves and Proton Scattering in the Near-Sun Solar Wind |
| title_full_unstemmed | Kinetic-hybrid Simulations of Counterpropagating Ion Cyclotron Waves and Proton Scattering in the Near-Sun Solar Wind |
| title_short | Kinetic-hybrid Simulations of Counterpropagating Ion Cyclotron Waves and Proton Scattering in the Near-Sun Solar Wind |
| title_sort | kinetic hybrid simulations of counterpropagating ion cyclotron waves and proton scattering in the near sun solar wind |
| topic | Solar wind Plasma physics Space plasmas |
| url | https://doi.org/10.3847/1538-4357/adbc6a |
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