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    Rights statement: Copyright 2007 by the American Geophysical Union.

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Saturn's neutral torus versus Jupiter's plasma torus

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Saturn's neutral torus versus Jupiter's plasma torus. / Delamere, P. A.; Bagenal, F.; Dols, V. et al.
In: Geophysical Research Letters, Vol. 34, No. 9, L09105, 16.05.2007.

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

Harvard

Delamere, PA, Bagenal, F, Dols, V & Ray, LC 2007, 'Saturn's neutral torus versus Jupiter's plasma torus', Geophysical Research Letters, vol. 34, no. 9, L09105. https://doi.org/10.1029/2007GL029437

APA

Delamere, P. A., Bagenal, F., Dols, V., & Ray, L. C. (2007). Saturn's neutral torus versus Jupiter's plasma torus. Geophysical Research Letters, 34(9), Article L09105. https://doi.org/10.1029/2007GL029437

Vancouver

Delamere PA, Bagenal F, Dols V, Ray LC. Saturn's neutral torus versus Jupiter's plasma torus. Geophysical Research Letters. 2007 May 16;34(9):L09105. Epub 2007 May 8. doi: 10.1029/2007GL029437

Author

Delamere, P. A. ; Bagenal, F. ; Dols, V. et al. / Saturn's neutral torus versus Jupiter's plasma torus. In: Geophysical Research Letters. 2007 ; Vol. 34, No. 9.

Bibtex

@article{c8826aa8470845fd891a915910bbcb66,
title = "Saturn's neutral torus versus Jupiter's plasma torus",
abstract = "With the recent discovery of an atmospheric plume of H2O it is thought that Enceladus could deliver as much a 300 kg/s of neutral gas to Saturn's inner magnetosphere. Io is the source of roughly 1 ton/s of sulfur and oxygen gas at Jupiter. Despite the apparent similarity, the neutral/ion ratio at Saturn is 3 orders of magnitude higher than at Jupiter. We explore the flow of mass and energy at Saturn and Jupiter using a simplified homogeneous physical chemistry model to understand why these two system are so different. Our results suggest that ionization at Saturn is fundamentally limited by the slower corotational flow velocity at Enceladus, resulting in a factor of 4 lower ion pickup temperature. The net result of cooler ions at Enceladus is a cooler thermal electron population (∼2 eV) that is insufficient to generate significant ionization.",
author = "Delamere, {P. A.} and F. Bagenal and V. Dols and Ray, {L. C.}",
note = "Copyright 2007 by the American Geophysical Union.",
year = "2007",
month = may,
day = "16",
doi = "10.1029/2007GL029437",
language = "English",
volume = "34",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "John Wiley & Sons, Ltd",
number = "9",

}

RIS

TY - JOUR

T1 - Saturn's neutral torus versus Jupiter's plasma torus

AU - Delamere, P. A.

AU - Bagenal, F.

AU - Dols, V.

AU - Ray, L. C.

N1 - Copyright 2007 by the American Geophysical Union.

PY - 2007/5/16

Y1 - 2007/5/16

N2 - With the recent discovery of an atmospheric plume of H2O it is thought that Enceladus could deliver as much a 300 kg/s of neutral gas to Saturn's inner magnetosphere. Io is the source of roughly 1 ton/s of sulfur and oxygen gas at Jupiter. Despite the apparent similarity, the neutral/ion ratio at Saturn is 3 orders of magnitude higher than at Jupiter. We explore the flow of mass and energy at Saturn and Jupiter using a simplified homogeneous physical chemistry model to understand why these two system are so different. Our results suggest that ionization at Saturn is fundamentally limited by the slower corotational flow velocity at Enceladus, resulting in a factor of 4 lower ion pickup temperature. The net result of cooler ions at Enceladus is a cooler thermal electron population (∼2 eV) that is insufficient to generate significant ionization.

AB - With the recent discovery of an atmospheric plume of H2O it is thought that Enceladus could deliver as much a 300 kg/s of neutral gas to Saturn's inner magnetosphere. Io is the source of roughly 1 ton/s of sulfur and oxygen gas at Jupiter. Despite the apparent similarity, the neutral/ion ratio at Saturn is 3 orders of magnitude higher than at Jupiter. We explore the flow of mass and energy at Saturn and Jupiter using a simplified homogeneous physical chemistry model to understand why these two system are so different. Our results suggest that ionization at Saturn is fundamentally limited by the slower corotational flow velocity at Enceladus, resulting in a factor of 4 lower ion pickup temperature. The net result of cooler ions at Enceladus is a cooler thermal electron population (∼2 eV) that is insufficient to generate significant ionization.

U2 - 10.1029/2007GL029437

DO - 10.1029/2007GL029437

M3 - Journal article

AN - SCOPUS:34347228101

VL - 34

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 9

M1 - L09105

ER -