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Magnetosphere-ionosphere coupling at Jupiter: Effect of field-aligned potentials on angular momentum transport

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Magnetosphere-ionosphere coupling at Jupiter : Effect of field-aligned potentials on angular momentum transport. / Ray, L. C.; Ergun, R. E.; Delamere, P. A.; Bagenal, F.

In: Journal of Geophysical Research: Space Physics, Vol. 115, No. 9, A09211, 09.2010.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Ray, LC, Ergun, RE, Delamere, PA & Bagenal, F 2010, 'Magnetosphere-ionosphere coupling at Jupiter: Effect of field-aligned potentials on angular momentum transport', Journal of Geophysical Research: Space Physics, vol. 115, no. 9, A09211. https://doi.org/10.1029/2010JA015423

APA

Ray, L. C., Ergun, R. E., Delamere, P. A., & Bagenal, F. (2010). Magnetosphere-ionosphere coupling at Jupiter: Effect of field-aligned potentials on angular momentum transport. Journal of Geophysical Research: Space Physics, 115(9), [A09211]. https://doi.org/10.1029/2010JA015423

Vancouver

Ray LC, Ergun RE, Delamere PA, Bagenal F. Magnetosphere-ionosphere coupling at Jupiter: Effect of field-aligned potentials on angular momentum transport. Journal of Geophysical Research: Space Physics. 2010 Sep;115(9). A09211. https://doi.org/10.1029/2010JA015423

Author

Ray, L. C. ; Ergun, R. E. ; Delamere, P. A. ; Bagenal, F. / Magnetosphere-ionosphere coupling at Jupiter : Effect of field-aligned potentials on angular momentum transport. In: Journal of Geophysical Research: Space Physics. 2010 ; Vol. 115, No. 9.

Bibtex

@article{3c4b4efef24b46a8811a3c90304c4c04,
title = "Magnetosphere-ionosphere coupling at Jupiter: Effect of field-aligned potentials on angular momentum transport",
abstract = "We present a time-independent model of Jupiter's rotation-driven aurora based on angular momentum conservation, including the effects of a field-aligned potential (φ∥) and an ionospheric conductivity that is modified by precipitating electrons. We argue that φ∥ arises from a limit to field-aligned current at high latitudes, and hence, we apply a current-voltage relation, which takes into account the low plasma densities at high latitudes. The resulting set of nonlinear equations that govern the behavior of angular momentum transfer is underconstrained and leads to a set of solutions, including those derived in earlier work. We show that solutions with high angular momentum transfer, large radial currents, and small mass transport rates (Ṁ ≤ 1000 kg/s) exist. Our set of solutions can reproduce many of the observed characteristics of Jupiter's main auroral oval, including the energy of the precipitating electrons, the energy flux into the ionosphere, the width of the aurora at the ionosphere, and net radial current across the field for a radial mass transport value of ∼500 kg/s.",
author = "Ray, {L. C.} and Ergun, {R. E.} and Delamere, {P. A.} and F. Bagenal",
note = "Copyright 2010 by the American Geophysical Union",
year = "2010",
month = sep,
doi = "10.1029/2010JA015423",
language = "English",
volume = "115",
journal = "Journal of Geophysical Research: Space Physics",
issn = "2169-9402",
publisher = "Blackwell Publishing Ltd",
number = "9",

}

RIS

TY - JOUR

T1 - Magnetosphere-ionosphere coupling at Jupiter

T2 - Effect of field-aligned potentials on angular momentum transport

AU - Ray, L. C.

AU - Ergun, R. E.

AU - Delamere, P. A.

AU - Bagenal, F.

N1 - Copyright 2010 by the American Geophysical Union

PY - 2010/9

Y1 - 2010/9

N2 - We present a time-independent model of Jupiter's rotation-driven aurora based on angular momentum conservation, including the effects of a field-aligned potential (φ∥) and an ionospheric conductivity that is modified by precipitating electrons. We argue that φ∥ arises from a limit to field-aligned current at high latitudes, and hence, we apply a current-voltage relation, which takes into account the low plasma densities at high latitudes. The resulting set of nonlinear equations that govern the behavior of angular momentum transfer is underconstrained and leads to a set of solutions, including those derived in earlier work. We show that solutions with high angular momentum transfer, large radial currents, and small mass transport rates (Ṁ ≤ 1000 kg/s) exist. Our set of solutions can reproduce many of the observed characteristics of Jupiter's main auroral oval, including the energy of the precipitating electrons, the energy flux into the ionosphere, the width of the aurora at the ionosphere, and net radial current across the field for a radial mass transport value of ∼500 kg/s.

AB - We present a time-independent model of Jupiter's rotation-driven aurora based on angular momentum conservation, including the effects of a field-aligned potential (φ∥) and an ionospheric conductivity that is modified by precipitating electrons. We argue that φ∥ arises from a limit to field-aligned current at high latitudes, and hence, we apply a current-voltage relation, which takes into account the low plasma densities at high latitudes. The resulting set of nonlinear equations that govern the behavior of angular momentum transfer is underconstrained and leads to a set of solutions, including those derived in earlier work. We show that solutions with high angular momentum transfer, large radial currents, and small mass transport rates (Ṁ ≤ 1000 kg/s) exist. Our set of solutions can reproduce many of the observed characteristics of Jupiter's main auroral oval, including the energy of the precipitating electrons, the energy flux into the ionosphere, the width of the aurora at the ionosphere, and net radial current across the field for a radial mass transport value of ∼500 kg/s.

U2 - 10.1029/2010JA015423

DO - 10.1029/2010JA015423

M3 - Journal article

AN - SCOPUS:77957575791

VL - 115

JO - Journal of Geophysical Research: Space Physics

JF - Journal of Geophysical Research: Space Physics

SN - 2169-9402

IS - 9

M1 - A09211

ER -