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The far-ultraviolet main auroral emission at Jupiter - Part 1: dawn-dusk brightness asymmetries

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The far-ultraviolet main auroral emission at Jupiter - Part 1: dawn-dusk brightness asymmetries. / Bonfond, B.; Gustin, J.; Gérard, J.-C. et al.
In: Annales Geophysicae, Vol. 33, No. 10, 01.10.2015, p. 1203-1209.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Bonfond, B, Gustin, J, Gérard, J-C, Grodent, D, Radioti, A, Palmaerts, B, Badman, SV, Khurana, KK & Tao, C 2015, 'The far-ultraviolet main auroral emission at Jupiter - Part 1: dawn-dusk brightness asymmetries', Annales Geophysicae, vol. 33, no. 10, pp. 1203-1209. https://doi.org/10.5194/angeo-33-1203-2015

APA

Bonfond, B., Gustin, J., Gérard, J-C., Grodent, D., Radioti, A., Palmaerts, B., Badman, S. V., Khurana, K. K., & Tao, C. (2015). The far-ultraviolet main auroral emission at Jupiter - Part 1: dawn-dusk brightness asymmetries. Annales Geophysicae, 33(10), 1203-1209. https://doi.org/10.5194/angeo-33-1203-2015

Vancouver

Bonfond B, Gustin J, Gérard J-C, Grodent D, Radioti A, Palmaerts B et al. The far-ultraviolet main auroral emission at Jupiter - Part 1: dawn-dusk brightness asymmetries. Annales Geophysicae. 2015 Oct 1;33(10):1203-1209. doi: 10.5194/angeo-33-1203-2015

Author

Bonfond, B. ; Gustin, J. ; Gérard, J.-C. et al. / The far-ultraviolet main auroral emission at Jupiter - Part 1 : dawn-dusk brightness asymmetries. In: Annales Geophysicae. 2015 ; Vol. 33, No. 10. pp. 1203-1209.

Bibtex

@article{a5e73b7f917f47a39a7810415fa1b84c,
title = "The far-ultraviolet main auroral emission at Jupiter - Part 1: dawn-dusk brightness asymmetries",
abstract = "The main auroral emission at Jupiter generally appears as a quasi-closed curtain centered around the magnetic pole. This auroral feature, which accounts for approximately half of the total power emitted by the aurorae in the ultraviolet range, is related to corotation enforcement currents in the middle magnetosphere. Early models for these currents assumed axisymmetry, but significant local time variability is obvious on any image of the Jovian aurorae. Here we use far-UV images from the Hubble Space Telescope to further characterize these variations on a statistical basis. We show that the dusk side sector is ~ 3 times brighter than the dawn side in the southern hemisphere and ~ 1.1 brighter in the northern hemisphere, where the magnetic anomaly complicates the interpretation of the measurements. We suggest that such an asymmetry between the dawn and the dusk sectors could be the result of a partial ring current in the nightside magnetosphere.",
author = "B. Bonfond and J. Gustin and J.-C. G{\'e}rard and D. Grodent and A. Radioti and B. Palmaerts and Badman, {S. V.} and Khurana, {K. K.} and C. Tao",
year = "2015",
month = oct,
day = "1",
doi = "10.5194/angeo-33-1203-2015",
language = "English",
volume = "33",
pages = "1203--1209",
journal = "Annales Geophysicae",
issn = "0992-7689",
publisher = "European Geosciences Union",
number = "10",

}

RIS

TY - JOUR

T1 - The far-ultraviolet main auroral emission at Jupiter - Part 1

T2 - dawn-dusk brightness asymmetries

AU - Bonfond, B.

AU - Gustin, J.

AU - Gérard, J.-C.

AU - Grodent, D.

AU - Radioti, A.

AU - Palmaerts, B.

AU - Badman, S. V.

AU - Khurana, K. K.

AU - Tao, C.

PY - 2015/10/1

Y1 - 2015/10/1

N2 - The main auroral emission at Jupiter generally appears as a quasi-closed curtain centered around the magnetic pole. This auroral feature, which accounts for approximately half of the total power emitted by the aurorae in the ultraviolet range, is related to corotation enforcement currents in the middle magnetosphere. Early models for these currents assumed axisymmetry, but significant local time variability is obvious on any image of the Jovian aurorae. Here we use far-UV images from the Hubble Space Telescope to further characterize these variations on a statistical basis. We show that the dusk side sector is ~ 3 times brighter than the dawn side in the southern hemisphere and ~ 1.1 brighter in the northern hemisphere, where the magnetic anomaly complicates the interpretation of the measurements. We suggest that such an asymmetry between the dawn and the dusk sectors could be the result of a partial ring current in the nightside magnetosphere.

AB - The main auroral emission at Jupiter generally appears as a quasi-closed curtain centered around the magnetic pole. This auroral feature, which accounts for approximately half of the total power emitted by the aurorae in the ultraviolet range, is related to corotation enforcement currents in the middle magnetosphere. Early models for these currents assumed axisymmetry, but significant local time variability is obvious on any image of the Jovian aurorae. Here we use far-UV images from the Hubble Space Telescope to further characterize these variations on a statistical basis. We show that the dusk side sector is ~ 3 times brighter than the dawn side in the southern hemisphere and ~ 1.1 brighter in the northern hemisphere, where the magnetic anomaly complicates the interpretation of the measurements. We suggest that such an asymmetry between the dawn and the dusk sectors could be the result of a partial ring current in the nightside magnetosphere.

U2 - 10.5194/angeo-33-1203-2015

DO - 10.5194/angeo-33-1203-2015

M3 - Journal article

VL - 33

SP - 1203

EP - 1209

JO - Annales Geophysicae

JF - Annales Geophysicae

SN - 0992-7689

IS - 10

ER -