中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 中国科学院地球与行星物理重点实验室
Phase locking among Saturn radio emissions revealed by Cassini observations

文献类型：期刊论文

作者Wu, Siyuan3,4; Ye, Shengyi3; Fischer, Georg5; Wang, Jian3; Kurth, William S.6; Yao, Zhonghua7; Guo, Ruilong1,7,8; Menietti, Johns D.6; Long, Minyi2; Xu, Yan7
刊名ASTRONOMY & ASTROPHYSICS
出版日期2023-12-04
卷号680页码:14
关键词radiation mechanisms: non-thermal planets and satellites: gaseous planets planetary systems
ISSN号0004-6361
DOI10.1051/0004-6361/202347279
英文摘要Context. Rotational modulation has been observed in different magnetospheric phenomena at Saturn, including radio emissions, which reflect the fundamental plasma processes in key regions. Though previous studies have shown Saturn's kilometric radiation, 5 kHz narrowband emissions, and auroral hiss to be rotationally modulated, the modulation features of its 20 kHz narrowband emissions are still unknown. Aims. This work complements previous modulation analysis of Saturn radio emissions by undertaking the analysis of 20 kHz narrowband emissions and comprehensively comparing the phases among the regularly observed radio components. Methods. We carried out a least-squares analysis using the time series of narrowband emissions, which we derived from an event list based on a previous statistical study on Saturn narrowband emissions. Results. We reveal a "phase-lock" relation between the 5 and 20 kHz narrowband emissions and Saturn's kilometric radiation, which suggests these strongly clock-like modulated emissions are connected to the rotating field-aligned current system, with local time preferences for the generation of the radio emissions. This local time preference cannot be well explained by existing theoretical frameworks. Although the phase-lock relation is relatively stable, it may be disrupted during solar wind compression. Therefore, the phase lock between these radio emissions may become a fundamental phenomenon that could help in establishing a global picture of the large-scale dynamics of Saturn's magnetosphere.
WOS关键词PLANETARY PERIOD OSCILLATIONS ; FIELD-ALIGNED CURRENTS ; NIGHTSIDE MAGNETOSPHERE SUBCOROTATION ; INWARD PLASMA TRANSPORT ; KILOMETRIC RADIATION ; NORTHERN
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDB 41000000] ; NSFC[42274221] ; NSFC[42074180] ; Science, Technology and Innovation Commission of Shenzhen Municipality program[STIC20200925153725002] ; Austrian Science Fund (FWF)[I 4559-N] ; China Scholarship Council
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001113604700005
出版者EDP SCIENCES S A
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; NSFC ; NSFC ; Science, Technology and Innovation Commission of Shenzhen Municipality program ; Science, Technology and Innovation Commission of Shenzhen Municipality program ; Austrian Science Fund (FWF) ; Austrian Science Fund (FWF) ; China Scholarship Council ; China Scholarship Council ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; NSFC ; NSFC ; Science, Technology and Innovation Commission of Shenzhen Municipality program ; Science, Technology and Innovation Commission of Shenzhen Municipality program ; Austrian Science Fund (FWF) ; Austrian Science Fund (FWF) ; China Scholarship Council ; China Scholarship Council ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; NSFC ; NSFC ; Science, Technology and Innovation Commission of Shenzhen Municipality program ; Science, Technology and Innovation Commission of Shenzhen Municipality program ; Austrian Science Fund (FWF) ; Austrian Science Fund (FWF) ; China Scholarship Council ; China Scholarship Council ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; NSFC ; NSFC ; Science, Technology and Innovation Commission of Shenzhen Municipality program ; Science, Technology and Innovation Commission of Shenzhen Municipality program ; Austrian Science Fund (FWF) ; Austrian Science Fund (FWF) ; China Scholarship Council ; China Scholarship Council
源URL[http://ir.iggcas.ac.cn/handle/132A11/111700]  
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Ye, Shengyi
作者单位1.Univ Liege, STAR Inst, Lab Planetary & Atmospher Phys, Liege, Belgium
2.Wuhan Univ, Sch Elect Informat, Dept Space Phys, Wuhan 430072, Peoples R China
3.Southern Univ Sci & Technol, Dept Earth & Space Sci, 1088 Xueyuan Ave, Shenzhen 518055, Guangdong, Peoples R China
4.Univ Paris, Univ PSL, Sorbonne Univ, LESIA,CNRS,Observ Paris, 5 Pl Jules Janssen, F-92195 Meudon, France
5.Austrian Acad Sci, Space Res Inst, Graz, Austria
6.Univ Iowa, Dept Phys & Astron, Iowa City, IA USA
7.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, 19 Beitucheng Western Rd, Beijing 100029, Peoples R China
8.Shandong Univ, Inst Space Sci, Sch Space Sci & Phys, Shandong Key Lab Opt Astron & Solar Terr Environm, Weihai 264209, Shandong, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Siyuan,Ye, Shengyi,Fischer, Georg,et al. Phase locking among Saturn radio emissions revealed by Cassini observations[J]. ASTRONOMY & ASTROPHYSICS,2023,680:14.
APA Wu, Siyuan.,Ye, Shengyi.,Fischer, Georg.,Wang, Jian.,Kurth, William S..,...&Xu, Yan.(2023).Phase locking among Saturn radio emissions revealed by Cassini observations.ASTRONOMY & ASTROPHYSICS,680,14.
MLA Wu, Siyuan,et al."Phase locking among Saturn radio emissions revealed by Cassini observations".ASTRONOMY & ASTROPHYSICS 680(2023):14.

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。