Saturn Anomalous Myriametric Radiation, a New Type of Saturn Radio Emission Revealed by Cassini

Wu, S. Y.1,2; Ye, S. Y.1; Fischer, G.3; Taubenschuss, U.4; Jackman, C. M.5; O'Dwyer, E.5; Kurth, W. S.6; Yao, S.7; Yao, Z. H.8; Menietti, J. D.6; Xu, Y.8; Long, M. Y.9; Cecconi, B.2

2022-08-28

10.1029/2022GL099237

GEOPHYSICAL RESEARCH LETTERS   Impact Factor & Quartile

0094-8276

1944-8007

A new radio component namely Saturn Anomalous Myriametric Radiation (SAM) is reported. A total of 193 SAM events have been identified by using all the Cassini Saturn orbital data. SAM emissions are L-O mode radio emission and occasionally accompanied by a first harmonic in R-X mode. SAM's intensities decrease with increasing distance from Saturn, suggesting a source near Saturn. SAM has a typical central frequency near 13 kHz, a bandwidth greater than 8 kHz and usually drifts in frequency over time. SAM's duration can extend to near 11 hr and even longer. These features distinguish SAM from the regular narrowband emissions observed in the nearby frequency range, hence the name anomalous. The high occurrence rate of SAM after low frequency extensions of Saturn Kilometric Radiation and the SAM cases observed during compressions of Saturn's magnetosphere suggest a special connection to solar wind dynamics and magnetospheric conditions at Saturn.

SCI ; EI

English

NI Journal Papers

First ; Corresponding

Strategic Priority Research Program of the Chinese Academy of Sciences[XDB 41000000] ; FWF-GACR international project - Austrian Science Fund FWF[I 4559-N/20-06802L] ; Science Foundation Ireland[18/FRL/6199]

Geology

Geosciences, Multidisciplinary

WOS:000842942200001

AMER GEOPHYSICAL UNION

20223712731184

Magnetosphere

Atmospheric Properties:443.1 ; Extraterrestrial Physics and Stellar Phenomena:657.2 ; Magnetism: Basic Concepts and Phenomena:701.2

GEOSCIENCES

Web of Science

1.Southern Univ Sci & Technol, Dept Earth & Space Sci, Shenzhen, Peoples R China
2.Univ Paris, LESIA, Observ Paris, Univ PSL,CNRS,Sorbonne Univ, Meudon, France
3.Austrian Acad Sci, Space Res Inst, Graz, Austria
4.Czech Acad Sci, Dept Space Phys, Inst Atmospher Phys, Prague, Czech Republic
5.Dublin Inst Adv, Sch Cosm Phys, DIAS Dunsink Observ, Dublin, Ireland
6.Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA
7.China Univ Geosci Beijing, Sch Geophys & Informat Technol, Beijing, Peoples R China
8.Chinese Acad Sci, Key Lab Earth & Planetary Phys, Inst Geol & Geophys, Beijing, Peoples R China
9.Wuhan Univ, Dept Space Phys, Sch Elect Informat, Wuhan, Peoples R China

Wu, S. Y.,Ye, S. Y.,Fischer, G.,et al. Saturn Anomalous Myriametric Radiation, a New Type of Saturn Radio Emission Revealed by Cassini[J]. GEOPHYSICAL RESEARCH LETTERS,2022,49(16).

Wu, S. Y..,Ye, S. Y..,Fischer, G..,Taubenschuss, U..,Jackman, C. M..,...&Cecconi, B..(2022).Saturn Anomalous Myriametric Radiation, a New Type of Saturn Radio Emission Revealed by Cassini.GEOPHYSICAL RESEARCH LETTERS,49(16).

Wu, S. Y.,et al."Saturn Anomalous Myriametric Radiation, a New Type of Saturn Radio Emission Revealed by Cassini".GEOPHYSICAL RESEARCH LETTERS 49.16(2022).