A Possible Unified Picture for the Connected Recurrent Magnetic Dipolarization, Quasi-Periodic ENA Enhancement, SKR Low-Frequency Extension and Narrowband Emission at Saturn

Xu, Y.1,2; Yao, Z. H.1,2,3; Ye, S. -Y.4; Badman, S. V.5; Dialynas, K.6; Sergis, N.6,7; Ray, L. C.5; Guo, R. L.8; Pan, D. X.9; Dunn, W. R.; Zhang, B.10; Bader, A.11; Kinrade, J.5; Wu, S. Y.4,12; Coates, A. J.3; Mitchell, D. G.13; Wei, Y.1,2

2023-09-01

10.1029/2023JA031445

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS   Impact Factor & Quartile

2169-9380

2169-9402

Magnetic Dipolarization, a hallmark indicator of the formation of field-aligned currents, plays a crucial role in the energy dissipative processes that occur within planetary magnetospheres. Saturn's magnetic dipolarization was found to recur after one planetary rotation, suggesting a potential correlation with the corotating current systems. The observation of enhanced Energetic Neutral Atoms (ENA) within Saturn's inner magnetosphere serves as a diagnostic tool, revealing the existence of a rotating, dynamic Partial Ring Current (PRC) system. By utilizing multiple datasets from Cassini, this study advances the understanding of the interrelationship between ENA emission and magnetic dipolarization. Our results suggest the possibility of a coupling between the PRC system revealed by the ENA emission and magnetic dipolarization. Furthermore, a temporal correlation was found between the ENA emissions and two distinct radio emissions. This study discusses potential causal relationships among these phenomena and first time proposes a global unified physical picture.

ENA dipolarization SKR narrow band emission partial ring current

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English

Others

This work was supported by National Natural Science Foundation of China Grants 42074211, Key Research Program of the Institute of Geology and Geophysics, CAS, Grant IGGCAS-201904. The work at the Academy of Athens was supported at JHU/APL by NASA under con[IGGCAS-201904] ; National Natural Science Foundation of China[NAS5 97271] ; Key Research Program of the Institute of Geology and Geophysics, CAS["NNX07AJ69~G","NNN06AA01C","ST/V000748/1"] ; NASA[ST/M005534/1] ; null[42074211]

Astronomy & Astrophysics

Astronomy & Astrophysics

WOS:001057900000001

AMER GEOPHYSICAL UNION

SPACE SCIENCE

Web of Science

1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
3.UCL Mullard Space Sci Lab, Dorking, England
4.Southern Univ Sci & Technol SUSTech, Dept Earth & Space Sci, Shenzhen, Peoples R China
5.Univ Lancaster, Dept Phys, Lancaster, England
6.Acad Athens, Off Space Res & Technol, Athens, Greece
7.Inst Space Applicat & Remote Sensing, Natl Observ Athens, Athens, Greece
8.Shandong Univ, Inst Space Sci, Sch Space Sci & Phys, Lab Opt Astron & Solar Terr Environm, Weihai, Peoples R China
9.China Univ Geosci Beijing, Sch Geophys & Informat Technol, Beijing, Peoples R China
10.Univ Hong Kong, Dept Earth Sci, Pokfulam, Hong Kong, Peoples R China
11.Gorilla, B-2000 Antwerp, Belgium
12.Univ Paris, Univ PSL, Sorbonne Univ, CNRS,LESIA,Observ Paris, Paris, France
13.Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA

Xu, Y.,Yao, Z. H.,Ye, S. -Y.,et al. A Possible Unified Picture for the Connected Recurrent Magnetic Dipolarization, Quasi-Periodic ENA Enhancement, SKR Low-Frequency Extension and Narrowband Emission at Saturn[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2023,128(9).

Xu, Y..,Yao, Z. H..,Ye, S. -Y..,Badman, S. V..,Dialynas, K..,...&Wei, Y..(2023).A Possible Unified Picture for the Connected Recurrent Magnetic Dipolarization, Quasi-Periodic ENA Enhancement, SKR Low-Frequency Extension and Narrowband Emission at Saturn.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,128(9).

Xu, Y.,et al."A Possible Unified Picture for the Connected Recurrent Magnetic Dipolarization, Quasi-Periodic ENA Enhancement, SKR Low-Frequency Extension and Narrowband Emission at Saturn".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 128.9(2023).