Quasi‐Periodic Emissions in Saturn's Magnetosphere and Their Effects on Electrons
Abstract Investigations into quasiperiodic (QP) whistler mode emissions within Saturn's magnetosphere have uncovered distinctive characteristics of these emissions, which display a nearly periodic rising tone structure in the wave spectrogram, characterized by modulation periods of several minu...
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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/10.1029/2024GL112061 |
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| author | S. Teng Dedong Wang Alexander Y. Drozdov Yuri Y. Shprits Zeyin Wu Y. X. Hao Z. Yao J. Zhang |
| author_facet | S. Teng Dedong Wang Alexander Y. Drozdov Yuri Y. Shprits Zeyin Wu Y. X. Hao Z. Yao J. Zhang |
| author_sort | S. Teng |
| collection | DOAJ |
| description | Abstract Investigations into quasiperiodic (QP) whistler mode emissions within Saturn's magnetosphere have uncovered distinctive characteristics of these emissions, which display a nearly periodic rising tone structure in the wave spectrogram, characterized by modulation periods of several minutes. These QP emissions are predominantly observed at low L‐shells around 5 and near the magnetic equator. Utilizing a quasi‐linear analysis framework, we evaluate the effects of these waves on the dynamics of energetic electrons. Our analysis suggests that these QP emissions can efficiently cause the loss of electrons within the energy range from 10 to 60 keV over a timescale of tens of minutes. By incorporating these findings into Fokker‐Planck simulations, we find minimal acceleration effects. This study is the first to examine QP emissions and their implications for energetic electron dynamics in Saturn's magnetosphere, highlighting their potentially significant contribution to the magnetospheric processes and dynamics. |
| format | Article |
| id | doaj-art-ea2df98c228e4f219f4c7ca0bf94249a |
| 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-ea2df98c228e4f219f4c7ca0bf94249a2025-01-20T13:05:57ZengWileyGeophysical Research Letters0094-82761944-80072025-01-01521n/an/a10.1029/2024GL112061Quasi‐Periodic Emissions in Saturn's Magnetosphere and Their Effects on ElectronsS. Teng0Dedong Wang1Alexander Y. Drozdov2Yuri Y. Shprits3Zeyin Wu4Y. X. Hao5Z. Yao6J. Zhang7NWU‐HKU Joint Center of Earth and Planetary Sciences Department of Earth Sciences The University of Hong Kong Hong Kong ChinaHelmholtz Centre Potsdam German Research Centre for Geosciences GFZ Potsdam GermanyUniversity of California Los Angeles CA USAHelmholtz Centre Potsdam German Research Centre for Geosciences GFZ Potsdam GermanyDeep Space Exploration Laboratory/Department of Geophysics and Planetary Sciences University of Science and Technology of China Hefei ChinaMax Planck Institute for Solar System Research Göttingen GermanyNWU‐HKU Joint Center of Earth and Planetary Sciences Department of Earth Sciences The University of Hong Kong Hong Kong ChinaNWU‐HKU Joint Center of Earth and Planetary Sciences Department of Earth Sciences The University of Hong Kong Hong Kong ChinaAbstract Investigations into quasiperiodic (QP) whistler mode emissions within Saturn's magnetosphere have uncovered distinctive characteristics of these emissions, which display a nearly periodic rising tone structure in the wave spectrogram, characterized by modulation periods of several minutes. These QP emissions are predominantly observed at low L‐shells around 5 and near the magnetic equator. Utilizing a quasi‐linear analysis framework, we evaluate the effects of these waves on the dynamics of energetic electrons. Our analysis suggests that these QP emissions can efficiently cause the loss of electrons within the energy range from 10 to 60 keV over a timescale of tens of minutes. By incorporating these findings into Fokker‐Planck simulations, we find minimal acceleration effects. This study is the first to examine QP emissions and their implications for energetic electron dynamics in Saturn's magnetosphere, highlighting their potentially significant contribution to the magnetospheric processes and dynamics.https://doi.org/10.1029/2024GL112061whistler mode emissionssaturnelectron loss |
| spellingShingle | S. Teng Dedong Wang Alexander Y. Drozdov Yuri Y. Shprits Zeyin Wu Y. X. Hao Z. Yao J. Zhang Quasi‐Periodic Emissions in Saturn's Magnetosphere and Their Effects on Electrons Geophysical Research Letters whistler mode emissions saturn electron loss |
| title | Quasi‐Periodic Emissions in Saturn's Magnetosphere and Their Effects on Electrons |
| title_full | Quasi‐Periodic Emissions in Saturn's Magnetosphere and Their Effects on Electrons |
| title_fullStr | Quasi‐Periodic Emissions in Saturn's Magnetosphere and Their Effects on Electrons |
| title_full_unstemmed | Quasi‐Periodic Emissions in Saturn's Magnetosphere and Their Effects on Electrons |
| title_short | Quasi‐Periodic Emissions in Saturn's Magnetosphere and Their Effects on Electrons |
| title_sort | quasi periodic emissions in saturn s magnetosphere and their effects on electrons |
| topic | whistler mode emissions saturn electron loss |
| url | https://doi.org/10.1029/2024GL112061 |
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