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Revealing the Local Time Structure of the Alfvén Radius in Jupiter's Magnetosphere Through High‐Resolution Simulations

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Revealing the Local Time Structure of the Alfvén Radius in Jupiter's Magnetosphere Through High‐Resolution Simulations. / Xu, Yan; Ray, Licia; Yao, Zhonghua et al.
In: Journal of Geophysical Research: Planets, Vol. 129, No. 6, e2024JE008368, 01.06.2024.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Xu, Y, Ray, L, Yao, Z, Zhang, B, Bonfond, B, Badman, S, Grodent, D, Feng, E, Qin, T & Wei, Y 2024, 'Revealing the Local Time Structure of the Alfvén Radius in Jupiter's Magnetosphere Through High‐Resolution Simulations', Journal of Geophysical Research: Planets, vol. 129, no. 6, e2024JE008368. https://doi.org/10.1029/2024je008368

APA

Xu, Y., Ray, L., Yao, Z., Zhang, B., Bonfond, B., Badman, S., Grodent, D., Feng, E., Qin, T., & Wei, Y. (2024). Revealing the Local Time Structure of the Alfvén Radius in Jupiter's Magnetosphere Through High‐Resolution Simulations. Journal of Geophysical Research: Planets, 129(6), Article e2024JE008368. https://doi.org/10.1029/2024je008368

Vancouver

Xu Y, Ray L, Yao Z, Zhang B, Bonfond B, Badman S et al. Revealing the Local Time Structure of the Alfvén Radius in Jupiter's Magnetosphere Through High‐Resolution Simulations. Journal of Geophysical Research: Planets. 2024 Jun 1;129(6):e2024JE008368. doi: 10.1029/2024je008368

Author

Xu, Yan ; Ray, Licia ; Yao, Zhonghua et al. / Revealing the Local Time Structure of the Alfvén Radius in Jupiter's Magnetosphere Through High‐Resolution Simulations. In: Journal of Geophysical Research: Planets. 2024 ; Vol. 129, No. 6.

Bibtex

@article{9c15bb67df6d473092e7ca0b9b05ad34,
title = "Revealing the Local Time Structure of the Alfv{\'e}n Radius in Jupiter's Magnetosphere Through High‐Resolution Simulations",
abstract = "In the context of planetary magnetospheres, the Alfv{\'e}n radius plays a critical role as the demarcation line where the planet's magnetosphere and ionosphere effectively decouple. This boundary is pivotal in understanding the complex interactions between planetary magnetic fields and space plasma environments. This study presents a dynamic analysis of the Alfv{\'e}n radius within Jupiter's magnetosphere using high‐resolution simulations to capture its temporal variability. Our simulations reveal that the Alfv{\'e}n radius presents a dynamic behavior, which is strongly modulated by planetary rotation. However, when averaged over one Jovian rotation period, the location of the Alfv{\'e}n radius displays striking similarities to that described by the statistical models proposed by Jenkins et al. (2024, 10.17635/lancaster/researchdata/661). Specifically, our averaged results highlight a prominent outward bulge in the radius location toward ∼03 local time with a notable absence of the radius between the noon and dusk sectors. The absence of the Alfv{\'e}n radius suggests the higher Alfv{\'e}n velocities in the noon‐to‐dusk sector associated with strong magnetic fields. These results suggest that while short‐term dynamics are present, the average position of the Alfv{\'e}n radius over a rotation period roughly remains consistent with previous steady‐state models, providing an enhanced understanding of the long‐term behavior exhibited by the magnetospheric plasma environment in Jupiter's magnetosphere. Importantly, the dynamic location of the Alfv{\'e}n radius and the observed asymmetry after averaging over one rotation period could demonstrate a significant correlation with the complex evolution of the auroral enhancement.",
author = "Yan Xu and Licia Ray and Zhonghua Yao and Binzheng Zhang and Bertrand Bonfond and Sarah Badman and Denis Grodent and Enhao Feng and Tianshu Qin and Yong Wei",
year = "2024",
month = jun,
day = "1",
doi = "10.1029/2024je008368",
language = "English",
volume = "129",
journal = "Journal of Geophysical Research: Planets",
issn = "2169-9100",
publisher = "Blackwell Publishing Ltd",
number = "6",

}

RIS

TY - JOUR

T1 - Revealing the Local Time Structure of the Alfvén Radius in Jupiter's Magnetosphere Through High‐Resolution Simulations

AU - Xu, Yan

AU - Ray, Licia

AU - Yao, Zhonghua

AU - Zhang, Binzheng

AU - Bonfond, Bertrand

AU - Badman, Sarah

AU - Grodent, Denis

AU - Feng, Enhao

AU - Qin, Tianshu

AU - Wei, Yong

PY - 2024/6/1

Y1 - 2024/6/1

N2 - In the context of planetary magnetospheres, the Alfvén radius plays a critical role as the demarcation line where the planet's magnetosphere and ionosphere effectively decouple. This boundary is pivotal in understanding the complex interactions between planetary magnetic fields and space plasma environments. This study presents a dynamic analysis of the Alfvén radius within Jupiter's magnetosphere using high‐resolution simulations to capture its temporal variability. Our simulations reveal that the Alfvén radius presents a dynamic behavior, which is strongly modulated by planetary rotation. However, when averaged over one Jovian rotation period, the location of the Alfvén radius displays striking similarities to that described by the statistical models proposed by Jenkins et al. (2024, 10.17635/lancaster/researchdata/661). Specifically, our averaged results highlight a prominent outward bulge in the radius location toward ∼03 local time with a notable absence of the radius between the noon and dusk sectors. The absence of the Alfvén radius suggests the higher Alfvén velocities in the noon‐to‐dusk sector associated with strong magnetic fields. These results suggest that while short‐term dynamics are present, the average position of the Alfvén radius over a rotation period roughly remains consistent with previous steady‐state models, providing an enhanced understanding of the long‐term behavior exhibited by the magnetospheric plasma environment in Jupiter's magnetosphere. Importantly, the dynamic location of the Alfvén radius and the observed asymmetry after averaging over one rotation period could demonstrate a significant correlation with the complex evolution of the auroral enhancement.

AB - In the context of planetary magnetospheres, the Alfvén radius plays a critical role as the demarcation line where the planet's magnetosphere and ionosphere effectively decouple. This boundary is pivotal in understanding the complex interactions between planetary magnetic fields and space plasma environments. This study presents a dynamic analysis of the Alfvén radius within Jupiter's magnetosphere using high‐resolution simulations to capture its temporal variability. Our simulations reveal that the Alfvén radius presents a dynamic behavior, which is strongly modulated by planetary rotation. However, when averaged over one Jovian rotation period, the location of the Alfvén radius displays striking similarities to that described by the statistical models proposed by Jenkins et al. (2024, 10.17635/lancaster/researchdata/661). Specifically, our averaged results highlight a prominent outward bulge in the radius location toward ∼03 local time with a notable absence of the radius between the noon and dusk sectors. The absence of the Alfvén radius suggests the higher Alfvén velocities in the noon‐to‐dusk sector associated with strong magnetic fields. These results suggest that while short‐term dynamics are present, the average position of the Alfvén radius over a rotation period roughly remains consistent with previous steady‐state models, providing an enhanced understanding of the long‐term behavior exhibited by the magnetospheric plasma environment in Jupiter's magnetosphere. Importantly, the dynamic location of the Alfvén radius and the observed asymmetry after averaging over one rotation period could demonstrate a significant correlation with the complex evolution of the auroral enhancement.

U2 - 10.1029/2024je008368

DO - 10.1029/2024je008368

M3 - Journal article

VL - 129

JO - Journal of Geophysical Research: Planets

JF - Journal of Geophysical Research: Planets

SN - 2169-9100

IS - 6

M1 - e2024JE008368

ER -