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    Rights statement: An edited version of this paper was published by AGU. Copyright 2017 American Geophysical Union. Radioti, A., Grodent, D., Yao, Z. H., Gérard, J.-C., Badman, S. V., Pryor, W., & Bonfond, B. (2017). Dawn auroral breakup at Saturn initiated by auroral arcs: UVIS/Cassini beginning of Grand Finale phase. Journal of Geophysical Research: Space Physics, 122, 12,111–12,119. https://doi.org/10.1002/2017JA024653

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Dawn Auroral Breakup at Saturn Initiated by Auroral Arcs: UVIS/Cassini Beginning of Grand Finale Phase

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Dawn Auroral Breakup at Saturn Initiated by Auroral Arcs : UVIS/Cassini Beginning of Grand Finale Phase. / Radioti, A.; Grodent, D.; Yao, Z. H.; Gérard, J.-c.; Badman, S. V.; Pryor, W.; Bonfond, B.

In: Journal of Geophysical Research: Space Physics, Vol. 122, No. 12, 12.2017, p. 12111-12119.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Radioti, A, Grodent, D, Yao, ZH, Gérard, J, Badman, SV, Pryor, W & Bonfond, B 2017, 'Dawn Auroral Breakup at Saturn Initiated by Auroral Arcs: UVIS/Cassini Beginning of Grand Finale Phase', Journal of Geophysical Research: Space Physics, vol. 122, no. 12, pp. 12111-12119. https://doi.org/10.1002/2017JA024653

APA

Radioti, A., Grodent, D., Yao, Z. H., Gérard, J., Badman, S. V., Pryor, W., & Bonfond, B. (2017). Dawn Auroral Breakup at Saturn Initiated by Auroral Arcs: UVIS/Cassini Beginning of Grand Finale Phase. Journal of Geophysical Research: Space Physics, 122(12), 12111-12119. https://doi.org/10.1002/2017JA024653

Vancouver

Radioti A, Grodent D, Yao ZH, Gérard J, Badman SV, Pryor W et al. Dawn Auroral Breakup at Saturn Initiated by Auroral Arcs: UVIS/Cassini Beginning of Grand Finale Phase. Journal of Geophysical Research: Space Physics. 2017 Dec;122(12):12111-12119. https://doi.org/10.1002/2017JA024653

Author

Radioti, A. ; Grodent, D. ; Yao, Z. H. ; Gérard, J.-c. ; Badman, S. V. ; Pryor, W. ; Bonfond, B. / Dawn Auroral Breakup at Saturn Initiated by Auroral Arcs : UVIS/Cassini Beginning of Grand Finale Phase. In: Journal of Geophysical Research: Space Physics. 2017 ; Vol. 122, No. 12. pp. 12111-12119.

Bibtex

@article{d4a6ebf805014c21818e21e6593a70e3,
title = "Dawn Auroral Breakup at Saturn Initiated by Auroral Arcs: UVIS/Cassini Beginning of Grand Finale Phase",
abstract = "We present Cassini auroral observations obtained on 11 November 2016 with the Ultraviolet Imaging Spectrograph at the beginning of the F-ring orbits and the Grand Finale phase of the mission. The spacecraft made a close approach to Saturn's southern pole and offered a remarkable view of the dayside and nightside aurora. With this sequence we identify, for the first time, the presence of dusk/midnight arcs, which are azimuthally spread from high to low latitudes, suggesting that their source region extends from the outer to middle/inner magnetosphere. The observed arcs could be auroral manifestations of plasma flows propagating toward the planet from the magnetotail, similar to terrestrial “auroral streamers.” During the sequence the dawn auroral region brightens and expands poleward. We suggest that the dawn auroral breakup results from a combination of plasma instability and global-scale magnetic field reconfiguration, which is initiated by plasma flows propagating toward the planet. Alternatively, the dawn auroral enhancement could be triggered by tail magnetic reconnection.",
keywords = "aurora, Saturn, magnetosphere",
author = "A. Radioti and D. Grodent and Yao, {Z. H.} and J.-c. G{\'e}rard and Badman, {S. V.} and W. Pryor and B. Bonfond",
note = "An edited version of this paper was published by AGU. Copyright 2017 American Geophysical Union. Radioti, A., Grodent, D., Yao, Z. H., G{\'e}rard, J.-C., Badman, S. V., Pryor, W., & Bonfond, B. (2017). Dawn auroral breakup at Saturn initiated by auroral arcs: UVIS/Cassini beginning of Grand Finale phase. Journal of Geophysical Research: Space Physics, 122, 12,111–12,119. https://doi.org/10.1002/2017JA024653",
year = "2017",
month = dec,
doi = "10.1002/2017JA024653",
language = "English",
volume = "122",
pages = "12111--12119",
journal = "Journal of Geophysical Research: Space Physics",
issn = "2169-9402",
publisher = "Blackwell Publishing Ltd",
number = "12",

}

RIS

TY - JOUR

T1 - Dawn Auroral Breakup at Saturn Initiated by Auroral Arcs

T2 - UVIS/Cassini Beginning of Grand Finale Phase

AU - Radioti, A.

AU - Grodent, D.

AU - Yao, Z. H.

AU - Gérard, J.-c.

AU - Badman, S. V.

AU - Pryor, W.

AU - Bonfond, B.

N1 - An edited version of this paper was published by AGU. Copyright 2017 American Geophysical Union. Radioti, A., Grodent, D., Yao, Z. H., Gérard, J.-C., Badman, S. V., Pryor, W., & Bonfond, B. (2017). Dawn auroral breakup at Saturn initiated by auroral arcs: UVIS/Cassini beginning of Grand Finale phase. Journal of Geophysical Research: Space Physics, 122, 12,111–12,119. https://doi.org/10.1002/2017JA024653

PY - 2017/12

Y1 - 2017/12

N2 - We present Cassini auroral observations obtained on 11 November 2016 with the Ultraviolet Imaging Spectrograph at the beginning of the F-ring orbits and the Grand Finale phase of the mission. The spacecraft made a close approach to Saturn's southern pole and offered a remarkable view of the dayside and nightside aurora. With this sequence we identify, for the first time, the presence of dusk/midnight arcs, which are azimuthally spread from high to low latitudes, suggesting that their source region extends from the outer to middle/inner magnetosphere. The observed arcs could be auroral manifestations of plasma flows propagating toward the planet from the magnetotail, similar to terrestrial “auroral streamers.” During the sequence the dawn auroral region brightens and expands poleward. We suggest that the dawn auroral breakup results from a combination of plasma instability and global-scale magnetic field reconfiguration, which is initiated by plasma flows propagating toward the planet. Alternatively, the dawn auroral enhancement could be triggered by tail magnetic reconnection.

AB - We present Cassini auroral observations obtained on 11 November 2016 with the Ultraviolet Imaging Spectrograph at the beginning of the F-ring orbits and the Grand Finale phase of the mission. The spacecraft made a close approach to Saturn's southern pole and offered a remarkable view of the dayside and nightside aurora. With this sequence we identify, for the first time, the presence of dusk/midnight arcs, which are azimuthally spread from high to low latitudes, suggesting that their source region extends from the outer to middle/inner magnetosphere. The observed arcs could be auroral manifestations of plasma flows propagating toward the planet from the magnetotail, similar to terrestrial “auroral streamers.” During the sequence the dawn auroral region brightens and expands poleward. We suggest that the dawn auroral breakup results from a combination of plasma instability and global-scale magnetic field reconfiguration, which is initiated by plasma flows propagating toward the planet. Alternatively, the dawn auroral enhancement could be triggered by tail magnetic reconnection.

KW - aurora

KW - Saturn

KW - magnetosphere

U2 - 10.1002/2017JA024653

DO - 10.1002/2017JA024653

M3 - Journal article

VL - 122

SP - 12111

EP - 12119

JO - Journal of Geophysical Research: Space Physics

JF - Journal of Geophysical Research: Space Physics

SN - 2169-9402

IS - 12

ER -