Dependence of Plasmaspheric Hiss Power on ωpe/Ωce
Abstract Plasmaspheric hiss waves play a key role in scattering energetic electrons and are often modeled in the inner magnetosphere using empirical hiss power maps parameterized by L shell. In this study, we compare the dependence of hiss power on both L shell (2 ≤ L ≤ 6) and the ratio of electron...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2025-07-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2025GL116589 |
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| author | Mingyue Lu Hui Zhu Yingying Zhao Huicong Chen Zhijie Qin Zhenghao She |
| author_facet | Mingyue Lu Hui Zhu Yingying Zhao Huicong Chen Zhijie Qin Zhenghao She |
| author_sort | Mingyue Lu |
| collection | DOAJ |
| description | Abstract Plasmaspheric hiss waves play a key role in scattering energetic electrons and are often modeled in the inner magnetosphere using empirical hiss power maps parameterized by L shell. In this study, we compare the dependence of hiss power on both L shell (2 ≤ L ≤ 6) and the ratio of electron plasma frequency to electron gyrofrequency (ωpe/Ωce) using observations from the Van Allen Probes. The statistical comparison spans a wide range of magnetic local times, frequency bands, and substorm activity levels. Hiss power shows a stronger correlation with ωpe/Ωce than with L shell, especially at low frequencies and during periods of enhanced substorm activity. These results indicate that ωpe/Ωce is a more physically meaningful parameter for describing plasmaspheric hiss and should be considered in radiation belt modeling. |
| format | Article |
| id | doaj-art-07b2adf70ffd46a5b46b633902549381 |
| institution | Kabale University |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-07b2adf70ffd46a5b46b6339025493812025-08-20T04:02:09ZengWileyGeophysical Research Letters0094-82761944-80072025-07-015213n/an/a10.1029/2025GL116589Dependence of Plasmaspheric Hiss Power on ωpe/ΩceMingyue Lu0Hui Zhu1Yingying Zhao2Huicong Chen3Zhijie Qin4Zhenghao She5Institute of Frontier and Interdisciplinary Science Shandong University Shandong ChinaInstitute of Frontier and Interdisciplinary Science Shandong University Shandong ChinaInstitute of Frontier and Interdisciplinary Science Shandong University Shandong ChinaInstitute of Frontier and Interdisciplinary Science Shandong University Shandong ChinaInstitute of Frontier and Interdisciplinary Science Shandong University Shandong ChinaInstitute of Frontier and Interdisciplinary Science Shandong University Shandong ChinaAbstract Plasmaspheric hiss waves play a key role in scattering energetic electrons and are often modeled in the inner magnetosphere using empirical hiss power maps parameterized by L shell. In this study, we compare the dependence of hiss power on both L shell (2 ≤ L ≤ 6) and the ratio of electron plasma frequency to electron gyrofrequency (ωpe/Ωce) using observations from the Van Allen Probes. The statistical comparison spans a wide range of magnetic local times, frequency bands, and substorm activity levels. Hiss power shows a stronger correlation with ωpe/Ωce than with L shell, especially at low frequencies and during periods of enhanced substorm activity. These results indicate that ωpe/Ωce is a more physically meaningful parameter for describing plasmaspheric hiss and should be considered in radiation belt modeling.https://doi.org/10.1029/2025GL116589plasmaspheric hiss wavesωpe/ΩceL shellradiation belts |
| spellingShingle | Mingyue Lu Hui Zhu Yingying Zhao Huicong Chen Zhijie Qin Zhenghao She Dependence of Plasmaspheric Hiss Power on ωpe/Ωce Geophysical Research Letters plasmaspheric hiss waves ωpe/Ωce L shell radiation belts |
| title | Dependence of Plasmaspheric Hiss Power on ωpe/Ωce |
| title_full | Dependence of Plasmaspheric Hiss Power on ωpe/Ωce |
| title_fullStr | Dependence of Plasmaspheric Hiss Power on ωpe/Ωce |
| title_full_unstemmed | Dependence of Plasmaspheric Hiss Power on ωpe/Ωce |
| title_short | Dependence of Plasmaspheric Hiss Power on ωpe/Ωce |
| title_sort | dependence of plasmaspheric hiss power on ωpe ωce |
| topic | plasmaspheric hiss waves ωpe/Ωce L shell radiation belts |
| url | https://doi.org/10.1029/2025GL116589 |
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