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Document Version Version Comment Date Status
281504.0 [No comment] 20.09.2007 08:28 Released

ID: 281504.0, MPI für Kernphysik / Interplanetary Dust Physics
Ulysses jovian latitude scan of high-velocity dust streams originating from the jovian system
Authors:Krüger, H.; Graps, A. L.; Flandes, A.; Forsythe, R. J.; Hamilton, D. P.; Horanyi, M.; Grün, Eberhard
Date of Publication (YYYY-MM-DD):2006
Title of Journal:Planetary and Space Science
Start Page:919
End Page:931
Copyright:Elsevier Ltd.
Review Status:not specified
Audience:Experts Only
Abstract / Description:In February 2004 the Ulysses spacecraft had its second flyby at Jupiter at 0.8 AU distance from the planet. Twenty-eight dust streams emanating from the jovian system were measured between November 2002 and August 2005 while the spacecraft was within 4 AU of the planet, scanning jovigraphic latitudes from +75 to -25. The highest dust fluxes were measured in mid 2004 at the passage of the equatorial plane of the planet when more than 2000 impacts per day were measured. The grain impact direction is correlated with the polarity and strength of the interplanetary magnetic field. At high jovigraphic latitudes, the impact rates show a periodicity of 26 days, closely matching the solar rotation period, while at the jovian equator the streams fluctuate with twice this period. The 14-day subharmonic streams alternate in arrival direction and are correlated with the pointing of the interplanetary magnetic field. Dust fluxes measured above and below the equatorial plane roughly decrease with the inverse square of the distance from the planet while along the equatorial plane dust fluxes are enhanced by up to 2 orders of magnitude.
Free Keywords:Interplanetary dust; Dust streams; Interplanetary magnetic field; Dust-plasma interaction; Planetary volcanism
External Publication Status:published
Document Type:Article
Affiliations:MPI für Kernphysik/Independent Research Groups/Heidelberg Dust Research Group (R. Srama)
External Affiliations:Max-Planck-Institut für Sonnensystemforschung, 37191 Katlenburg-Lindau, Germany
INAF-Istituto di Fisica dello Spazio Interplanetario, CNR - ARTOV, 00133 Roma, Italy
University of Maryland, College Park, MD 20742-2421, USA
Departamento de investigaciones solares y planetarias, Instituto de Geofísica, UNAM Ciudad Universitaria, Coyoacán 04510, Mexico City, Mexico
The Blackett Laboratory, Imperial College, London SW7 2BZ, UK
Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, Co, USA
Hawaii Institute of Geophysics and Planetology, Honolulu, HI 96822, USA