Radial and Latitudinal Distributions of the Exohiss Under the Effect of Landau Damping
Abstract Exohiss serves as a typical imprint of the outward energy release from plasmaspheric hiss. The distribution of exohiss under the effect of Landau damping has not been thoroughly evaluate. On the basis of observations from the Van Allen Probes on 17 February 2014, we performed two‐dimensiona...
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| Format: | Article |
| Language: | English |
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Wiley
2025-01-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2024GL112567 |
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| author | Xiangling Ding Zhaoguo He Zhiyong Wu Jiang Yu Kun Li Yuguang Ye Qiugang Zong |
| author_facet | Xiangling Ding Zhaoguo He Zhiyong Wu Jiang Yu Kun Li Yuguang Ye Qiugang Zong |
| author_sort | Xiangling Ding |
| collection | DOAJ |
| description | Abstract Exohiss serves as a typical imprint of the outward energy release from plasmaspheric hiss. The distribution of exohiss under the effect of Landau damping has not been thoroughly evaluate. On the basis of observations from the Van Allen Probes on 17 February 2014, we performed two‐dimensional ray tracing simulations to model the evolution of hiss waves propagating from the geomagnetic equator in plasmasphere. The results show that the hiss wave power decreases rapidly as the waves enter the plasmatrough under the enhanced Landau damping effect of hot electrons. Furthermore, we perform a statistical analysis of the simulation results from multiple rays and obtain the radial, latitudinal, and frequency distributions of the exohiss wave power. The modeled distribution characteristics of exohiss align well with observations, suggesting that Landau damping is crucial in shaping the morphology of exohiss in the inner magnetosphere. |
| format | Article |
| id | doaj-art-064a3134bfd4425c8e5422d7fe4ef920 |
| institution | Kabale University |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-064a3134bfd4425c8e5422d7fe4ef9202025-01-20T13:05:57ZengWileyGeophysical Research Letters0094-82761944-80072025-01-01521n/an/a10.1029/2024GL112567Radial and Latitudinal Distributions of the Exohiss Under the Effect of Landau DampingXiangling Ding0Zhaoguo He1Zhiyong Wu2Jiang Yu3Kun Li4Yuguang Ye5Qiugang Zong6Planetary Environmental and Astrobiological Research Laboratory (PEARL) School of Atmospheric Sciences Sun Yat‐sen University Zhuhai ChinaState Key Laboratory of Lunar and Planetary Sciences Macau University of Science and Technology Macao ChinaDeep Space Exploration Laboratory/School of Earth and Space Sciences University of Science and Technology of China Hefei ChinaPlanetary Environmental and Astrobiological Research Laboratory (PEARL) School of Atmospheric Sciences Sun Yat‐sen University Zhuhai ChinaPlanetary Environmental and Astrobiological Research Laboratory (PEARL) School of Atmospheric Sciences Sun Yat‐sen University Zhuhai ChinaState Key Laboratory of Lunar and Planetary Sciences Macau University of Science and Technology Macao ChinaState Key Laboratory of Lunar and Planetary Sciences Macau University of Science and Technology Macao ChinaAbstract Exohiss serves as a typical imprint of the outward energy release from plasmaspheric hiss. The distribution of exohiss under the effect of Landau damping has not been thoroughly evaluate. On the basis of observations from the Van Allen Probes on 17 February 2014, we performed two‐dimensional ray tracing simulations to model the evolution of hiss waves propagating from the geomagnetic equator in plasmasphere. The results show that the hiss wave power decreases rapidly as the waves enter the plasmatrough under the enhanced Landau damping effect of hot electrons. Furthermore, we perform a statistical analysis of the simulation results from multiple rays and obtain the radial, latitudinal, and frequency distributions of the exohiss wave power. The modeled distribution characteristics of exohiss align well with observations, suggesting that Landau damping is crucial in shaping the morphology of exohiss in the inner magnetosphere.https://doi.org/10.1029/2024GL112567plasmaspheric hissexohisswave propagationray tracingwave‐particle interactionLandau damping |
| spellingShingle | Xiangling Ding Zhaoguo He Zhiyong Wu Jiang Yu Kun Li Yuguang Ye Qiugang Zong Radial and Latitudinal Distributions of the Exohiss Under the Effect of Landau Damping Geophysical Research Letters plasmaspheric hiss exohiss wave propagation ray tracing wave‐particle interaction Landau damping |
| title | Radial and Latitudinal Distributions of the Exohiss Under the Effect of Landau Damping |
| title_full | Radial and Latitudinal Distributions of the Exohiss Under the Effect of Landau Damping |
| title_fullStr | Radial and Latitudinal Distributions of the Exohiss Under the Effect of Landau Damping |
| title_full_unstemmed | Radial and Latitudinal Distributions of the Exohiss Under the Effect of Landau Damping |
| title_short | Radial and Latitudinal Distributions of the Exohiss Under the Effect of Landau Damping |
| title_sort | radial and latitudinal distributions of the exohiss under the effect of landau damping |
| topic | plasmaspheric hiss exohiss wave propagation ray tracing wave‐particle interaction Landau damping |
| url | https://doi.org/10.1029/2024GL112567 |
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