Enceladus' Varying Imprint on the Magnetosphere of Saturn-Reference-Cited by-同舟云学术

Enceladus' Varying Imprint on the Magnetosphere of Saturn

Published:2006-03-10 Issue:5766 Volume:311 Page:1412-1415
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Jones G. H.¹²³,Roussos E.¹²³,Krupp N.¹²³,Paranicas C.¹²³,Woch J.¹²³,Lagg A.¹²³,Mitchell D. G.¹²³,Krimigis S. M.¹²³,Dougherty M. K.¹²³

Affiliation:

1. Max Planck Institut für Sonnensystemforschung, Max-Planck-Str. 2, 37191 Katlenburg-Lindau, Germany.

2. Applied Physics Laboratory, The Johns Hopkins University, 11100 Johns Hopkins Road, Laurel, MD 20723–6099, USA.

3. The Blackett Laboratory, Imperial College London, London SW7 2BW, UK.

Abstract

The bombardment of Saturn's moon Enceladus by >20–kiloelectron volt magnetospheric particles causes particle flux depletions in regions magnetically connected to its orbit. Irrespective of magnetospheric activity, proton depletions are persistent, whereas electron depletions are quickly erased by magnetospheric processes. Observations of these signatures by Cassini's Magnetospheric Imaging Instrument allow remote monitoring of Enceladus' gas and dust environments. This reveals substantial outgassing variability at the moon and suggests increased dust concentrations at its Lagrange points. The characteristics of the particle depletions additionally provide key radial diffusion coefficients for energetic electrons and an independent measure of the inner magnetosphere's rotation velocity.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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