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    Rights statement: Accepted for publication in Journal of Geophysical Research: Space Physics. Copyright 2018 American Geophysical Union. Further reproduction or electronic distribution is not permitted

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Recurrent magnetic dipolarization at Saturn: revealed by Cassini

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Recurrent magnetic dipolarization at Saturn: revealed by Cassini. / Yao, Z. H. ; Radioti, Aikaterini; Grodent, D. et al.
In: Journal of Geophysical Research: Space Physics, Vol. 123, No. 10, 10.2018, p. 8502-8517.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Yao, ZH, Radioti, A, Grodent, D, Ray, LC, Palmaerts, B, Sergis, N, Dialynas, K, Coates, AJ, Arridge, CS, Roussos, E, Badman, SV, Ye, S-Y, Gerard, J-C, Delamere, P, Guo, RL, Pu, ZY, Waite, JH, Krupp, N, Mitchell, DG & Dougherty, MK 2018, 'Recurrent magnetic dipolarization at Saturn: revealed by Cassini', Journal of Geophysical Research: Space Physics, vol. 123, no. 10, pp. 8502-8517. https://doi.org/10.1029/2018JA025837

APA

Yao, Z. H., Radioti, A., Grodent, D., Ray, L. C., Palmaerts, B., Sergis, N., Dialynas, K., Coates, A. J., Arridge, C. S., Roussos, E., Badman, S. V., Ye, S.-Y., Gerard, J.-C., Delamere, P., Guo, R. L., Pu, Z. Y., Waite, J. H., Krupp, N., Mitchell, D. G., & Dougherty, M. K. (2018). Recurrent magnetic dipolarization at Saturn: revealed by Cassini. Journal of Geophysical Research: Space Physics, 123(10), 8502-8517. https://doi.org/10.1029/2018JA025837

Vancouver

Yao ZH, Radioti A, Grodent D, Ray LC, Palmaerts B, Sergis N et al. Recurrent magnetic dipolarization at Saturn: revealed by Cassini. Journal of Geophysical Research: Space Physics. 2018 Oct;123(10):8502-8517. Epub 2018 Oct 11. doi: 10.1029/2018JA025837

Author

Yao, Z. H. ; Radioti, Aikaterini ; Grodent, D. et al. / Recurrent magnetic dipolarization at Saturn : revealed by Cassini. In: Journal of Geophysical Research: Space Physics. 2018 ; Vol. 123, No. 10. pp. 8502-8517.

Bibtex

@article{8de73b864f40446a96d1b6f8a8abb5d4,
title = "Recurrent magnetic dipolarization at Saturn: revealed by Cassini",
abstract = "Planetary magnetospheres receive plasma and energy from the Sun or moons of planets and consequently stretch magnetic field lines. The process may last for varied timescales at different planets. From time to time, energy is rapidly released in the magnetosphere and subsequently precipitated into the ionosphere and upper atmosphere. Usually, this energy dissipation is associated with magnetic dipolarization in the magnetosphere.This process is accompanied by plasma acceleration and field-aligned current formation, and subsequently auroral emissions are often significantly enhanced. Using measurements from multiple instruments on board the Cassini spacecraft, we reveal that magnetic dipolarization events at Saturn could reoccur after one planetary rotation and name them as recurrent dipolarizations. Three events are presented, including one from the dayside magnetosphere, which has no known precedent with terrestrial magnetospheric observations. During these events, recurrent energizations of plasma (electrons or ions) were also detected, which clearly demonstrate that these processes shall not be simply attributed to modulation of planetary periodic oscillation, although we do not exclude the possibility that the planetary periodic oscillation may modulate other processes (e.g., magnetic reconnection) which energizes particles. We discuss the potential physical mechanisms for generating the recurrent dipolarization process in a comprehensive view, including aurora and energetic neutral atom emissions. {\textcopyright}2018. The Authors.",
keywords = "aurora, Cassini, dipolarization, field-aligned current, magnetosphere, Saturn",
author = "Yao, {Z. H.} and Aikaterini Radioti and D. Grodent and Ray, {Licia C} and B. Palmaerts and N. Sergis and Kostas Dialynas and Coates, {A. J.} and Arridge, {Christopher Stephen} and E. Roussos and Badman, {Sarah Victoria} and Sheng-Yi Ye and J.-C. Gerard and Peter Delamere and Guo, {R. L.} and Z.Y. Pu and J.H. Waite and N. Krupp and Mitchell, {Donald G.} and M.K. Dougherty",
note = "Copyright 2018 American Geophysical Union. Further reproduction or electronic distribution is not permitted",
year = "2018",
month = oct,
doi = "10.1029/2018JA025837",
language = "English",
volume = "123",
pages = "8502--8517",
journal = "Journal of Geophysical Research: Space Physics",
issn = "2169-9402",
publisher = "Blackwell Publishing Ltd",
number = "10",

}

RIS

TY - JOUR

T1 - Recurrent magnetic dipolarization at Saturn

T2 - revealed by Cassini

AU - Yao, Z. H.

AU - Radioti, Aikaterini

AU - Grodent, D.

AU - Ray, Licia C

AU - Palmaerts, B.

AU - Sergis, N.

AU - Dialynas, Kostas

AU - Coates, A. J.

AU - Arridge, Christopher Stephen

AU - Roussos, E.

AU - Badman, Sarah Victoria

AU - Ye, Sheng-Yi

AU - Gerard, J.-C.

AU - Delamere, Peter

AU - Guo, R. L.

AU - Pu, Z.Y.

AU - Waite, J.H.

AU - Krupp, N.

AU - Mitchell, Donald G.

AU - Dougherty, M.K.

N1 - Copyright 2018 American Geophysical Union. Further reproduction or electronic distribution is not permitted

PY - 2018/10

Y1 - 2018/10

N2 - Planetary magnetospheres receive plasma and energy from the Sun or moons of planets and consequently stretch magnetic field lines. The process may last for varied timescales at different planets. From time to time, energy is rapidly released in the magnetosphere and subsequently precipitated into the ionosphere and upper atmosphere. Usually, this energy dissipation is associated with magnetic dipolarization in the magnetosphere.This process is accompanied by plasma acceleration and field-aligned current formation, and subsequently auroral emissions are often significantly enhanced. Using measurements from multiple instruments on board the Cassini spacecraft, we reveal that magnetic dipolarization events at Saturn could reoccur after one planetary rotation and name them as recurrent dipolarizations. Three events are presented, including one from the dayside magnetosphere, which has no known precedent with terrestrial magnetospheric observations. During these events, recurrent energizations of plasma (electrons or ions) were also detected, which clearly demonstrate that these processes shall not be simply attributed to modulation of planetary periodic oscillation, although we do not exclude the possibility that the planetary periodic oscillation may modulate other processes (e.g., magnetic reconnection) which energizes particles. We discuss the potential physical mechanisms for generating the recurrent dipolarization process in a comprehensive view, including aurora and energetic neutral atom emissions. ©2018. The Authors.

AB - Planetary magnetospheres receive plasma and energy from the Sun or moons of planets and consequently stretch magnetic field lines. The process may last for varied timescales at different planets. From time to time, energy is rapidly released in the magnetosphere and subsequently precipitated into the ionosphere and upper atmosphere. Usually, this energy dissipation is associated with magnetic dipolarization in the magnetosphere.This process is accompanied by plasma acceleration and field-aligned current formation, and subsequently auroral emissions are often significantly enhanced. Using measurements from multiple instruments on board the Cassini spacecraft, we reveal that magnetic dipolarization events at Saturn could reoccur after one planetary rotation and name them as recurrent dipolarizations. Three events are presented, including one from the dayside magnetosphere, which has no known precedent with terrestrial magnetospheric observations. During these events, recurrent energizations of plasma (electrons or ions) were also detected, which clearly demonstrate that these processes shall not be simply attributed to modulation of planetary periodic oscillation, although we do not exclude the possibility that the planetary periodic oscillation may modulate other processes (e.g., magnetic reconnection) which energizes particles. We discuss the potential physical mechanisms for generating the recurrent dipolarization process in a comprehensive view, including aurora and energetic neutral atom emissions. ©2018. The Authors.

KW - aurora

KW - Cassini

KW - dipolarization

KW - field-aligned current

KW - magnetosphere

KW - Saturn

U2 - 10.1029/2018JA025837

DO - 10.1029/2018JA025837

M3 - Journal article

VL - 123

SP - 8502

EP - 8517

JO - Journal of Geophysical Research: Space Physics

JF - Journal of Geophysical Research: Space Physics

SN - 2169-9402

IS - 10

ER -