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Xu Y, Arridge CS, Yao ZH, Zhang B, Ray LC, Badman SV, Dunn WR, Ebert RW, Chen JJ, Allegrini F, Kurth WS, Qin TS, Connerney JEP, McComas DJ, Bolton SJ, Wei Y. In situ evidence of the magnetospheric cusp of Jupiter from Juno spacecraft measurements. Nat Commun 2024; 15:6062. [PMID: 39025850 PMCID: PMC11258361 DOI: 10.1038/s41467-024-50449-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 07/08/2024] [Indexed: 07/20/2024] Open
Abstract
The magnetospheric cusp connects the planetary magnetic field to interplanetary space, offering opportunities for charged particles to precipitate to or escape from the planet. Terrestrial cusps are typically found near noon local time, but the characteristics of the Jovian cusp are unknown. Here we show direct evidence of Jovian cusps using datasets from multiple instruments onboard Juno spacecraft. We find that the cusps of Jupiter are in the dusk sector, which is contradicting Earth-based predictions of a near-noon location. Nevertheless, the characteristics of charged particles in the Jovian cusps resemble terrestrial and Saturnian cusps, implying similar cusp microphysics exist across different planets. These results demonstrate that while the basic physical processes may operate similarly to those at Earth, Jupiter's rapid rotation and its location in the heliosphere can dramatically change the configuration of the cusp. This work provides useful insights into the fundamental consequences of star-planet interactions, highlighting how planetary environments and rotational dynamics influence magnetospheric structures.
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Affiliation(s)
- Y Xu
- Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
- College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China
- Department of Physics, Lancaster University, Lancaster, UK
| | - C S Arridge
- Department of Physics, Lancaster University, Lancaster, UK
| | - Z H Yao
- Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China.
- College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China.
- NWU-HKU Joint Centre of Earth and Planetary Sciences, Department of Earth Sciences, University of Hong Kong, Hong Kong SAR, China.
- Department of Physics and Astronomy, University College London, London, UK.
| | - B Zhang
- NWU-HKU Joint Centre of Earth and Planetary Sciences, Department of Earth Sciences, University of Hong Kong, Hong Kong SAR, China
| | - L C Ray
- Department of Physics, Lancaster University, Lancaster, UK
| | - S V Badman
- Department of Physics, Lancaster University, Lancaster, UK
| | - W R Dunn
- Department of Physics and Astronomy, University College London, London, UK
| | - R W Ebert
- Southwest Research Institute, San Antonio, TX, USA
- Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio, TX, USA
| | - J J Chen
- NWU-HKU Joint Centre of Earth and Planetary Sciences, Department of Earth Sciences, University of Hong Kong, Hong Kong SAR, China
| | - F Allegrini
- Southwest Research Institute, San Antonio, TX, USA
- Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio, TX, USA
| | - W S Kurth
- Department of Physics and Astronomy, University of Iowa, Iowa City, IA, USA
| | - T S Qin
- NWU-HKU Joint Centre of Earth and Planetary Sciences, Department of Earth Sciences, University of Hong Kong, Hong Kong SAR, China
| | - J E P Connerney
- Space Research Corporation, Annapolis, MD, USA
- NASA/Goddard Space Flight Center, Greenbelt, MD, USA
| | - D J McComas
- Department of Astrophysical Sciences, Princeton University, Princeton, NJ, USA
| | - S J Bolton
- Southwest Research Institute, San Antonio, TX, USA
| | - Y Wei
- Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
- College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China
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Lu G, Lyons LR, Reiff PH, Denig WF, de la Beaujardiére O, Kroehl HW, Newell PT, Rich FJ, Opgenoorth H, Persson MAL, Ruohoniemi JM, Friis-Christensen E, Tomlinson L, Morris R, Burns G, McEwin A. Characteristics of ionospheric convection and field-aligned current in the dayside cusp region. ACTA ACUST UNITED AC 1995. [DOI: 10.1029/94ja02665] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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