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    Models of dust around Europa and Ganymede

    Access Status
    Fulltext not available
    Authors
    Miljković, Katarina
    Hillier, J.
    Mason, N.
    Zarnecki, J.
    Date
    2012
    Type
    Journal Article
    
    Metadata
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    Citation
    Miljkovic, K. and Hillier, J. and Mason, N. and Zarnecki, J. 2012. Models of dust around Europa and Ganymede. Planetary and Space Science. 70 (1): pp. 20-27.
    Source Title
    Planetary and Space Science
    DOI
    10.1016/j.pss.2012.06.006
    ISSN
    0032-0633
    School
    Department of Applied Geology
    URI
    http://hdl.handle.net/20.500.11937/51763
    Collection
    • Curtin Research Publications
    Abstract

    We use numerical models, supported by our laboratory data, to predict the dust densities of ejecta outflux at any altitude within the Hill spheres of Europa and Ganymede. The ejecta are created by micrometeoroid bombardment and five different dust populations are investigated as sources of dust around the moons. The impacting dust flux (influx) causes the ejection of a certain amount of surface material (outflux). The outflux populates the space around the moons, where a part of the ejecta escapes and the rest falls back to the surface. These models were validated against existing Galileo DDS (Dust Detector System) data collected during Europa and Ganymede flybys. Uncertainties of the input parameters and their effects on the model outcome are also included. The results of this model are important for future missions to Europa and Ganymede, such as JUICE (JUpiter ICy moon Explorer), recently selected as ESAs next large space mission to be launched in 2022. © 2012 Elsevier Ltd.

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