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Statistics of Water-group Band Ion Cyclotron Waves in Saturn's Inner Magnetosphere Based on 13 yr of Cassini Measurements

文献类型：期刊论文

作者Long, Minyi5; Cao, Xing5; Gu, Xudong5; Ni, Binbin4,5; Qu, Shaojie3; Ye, Shengyi2; Yao, Zhonghua1; Wu, Siyuan2; Xu, Yan1
刊名ASTROPHYSICAL JOURNAL
出版日期2022-06-01
卷号932期号:1页码:10
ISSN号0004-637X
DOI10.3847/1538-4357/ac6bf0
英文摘要Based on Cassini observations from 2004 to 2016, we perform a comprehensive analysis of the statistical distribution of the occurrence rate, averaged amplitude, wave normal angle (WNA), ellipticity, and power spectral intensity of ion cyclotron waves in Saturn's inner magnetosphere. Our results show that ion cyclotron waves mainly occur between the orbits of Enceladus and Dione near the equatorial region (vertical bar lambda vertical bar < 20 degrees), with higher occurrence rates in the northern hemisphere than the southern hemisphere. The averaged wave amplitudes vary between 0.1 and 2 nT with a strong day-night asymmetry and a pronounced minimum at the equator. Saturnian ion cyclotron waves are predominantly left-handed polarized with small WNAs near the equator and become linearly polarized with larger WNAs at higher latitudes. The major wave power occurs frequently at frequencies of 0.5-1.2 f(w)+, where f(w)+ is the equatorial gyrofrequency of H2O+ ions, with the strongest intensity (>similar to 10 nT(2) Hz(-1)) at L similar to 6.5 statistically present in the midnight sector.
WOS关键词EMIC WAVES ; RELATIVISTIC ELECTRONS ; HYBRID SIMULATIONS ; PICKUP IONS ; SCATTERING ; ENCELADUS ; VAPOR ; GENERATION ; PLASMA ; PLUME
资助项目pre-research projects on Civil Aerospace Technologies - China National Space Administration[D020303] ; pre-research projects on Civil Aerospace Technologies - China National Space Administration[D020104] ; pre-research projects on Civil Aerospace Technologies - China National Space Administration[D020308] ; NSFC[42025404] ; NSFC[42188101] ; NSFC[41904144] ; B-type Strategic Priority Program of the Chinese Academy of Sciences[XDB41000000] ; Fundamental Research Funds for the Central Universities[2042021kf1045] ; Fundamental Research Funds for the Central Universities[2042021kf1056] ; Fundamental Research Funds for the Central Universities[2042022kf1012]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP Publishing Ltd
WOS记录号WOS:000811485700001
资助机构pre-research projects on Civil Aerospace Technologies - China National Space Administration ; pre-research projects on Civil Aerospace Technologies - China National Space Administration ; NSFC ; NSFC ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; pre-research projects on Civil Aerospace Technologies - China National Space Administration ; pre-research projects on Civil Aerospace Technologies - China National Space Administration ; NSFC ; NSFC ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; pre-research projects on Civil Aerospace Technologies - China National Space Administration ; pre-research projects on Civil Aerospace Technologies - China National Space Administration ; NSFC ; NSFC ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; pre-research projects on Civil Aerospace Technologies - China National Space Administration ; pre-research projects on Civil Aerospace Technologies - China National Space Administration ; NSFC ; NSFC ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities
源URL[http://ir.iggcas.ac.cn/handle/132A11/106085]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Cao, Xing
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
2.Southern Univ Sci & Technol, Dept Earth & Space Sci, Shenzhen, Peoples R China
3.Inst Spacecraft Syst Engn, Beijing, Peoples R China
4.CAS Ctr Excellence Comparat Planetol, Hefei, Peoples R China
5.Wuhan Univ, Sch Elect Informat, Dept Space Phys, Wuhan, Peoples R China
推荐引用方式
GB/T 7714		 Long, Minyi,Cao, Xing,Gu, Xudong,et al. Statistics of Water-group Band Ion Cyclotron Waves in Saturn's Inner Magnetosphere Based on 13 yr of Cassini Measurements[J]. ASTROPHYSICAL JOURNAL,2022,932(1):10.
APA Long, Minyi.,Cao, Xing.,Gu, Xudong.,Ni, Binbin.,Qu, Shaojie.,...&Xu, Yan.(2022).Statistics of Water-group Band Ion Cyclotron Waves in Saturn's Inner Magnetosphere Based on 13 yr of Cassini Measurements.ASTROPHYSICAL JOURNAL,932(1),10.
MLA Long, Minyi,et al."Statistics of Water-group Band Ion Cyclotron Waves in Saturn's Inner Magnetosphere Based on 13 yr of Cassini Measurements".ASTROPHYSICAL JOURNAL 932.1(2022):10.

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来源：地质与地球物理研究所

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