Abstract We have analysed measurements of water group ions at comet Giacobini-Zinner, obtained with the EPAS instrument on the ICE spacecraft, in order to determine the bulk parameters of these ions. The measured ion velocity distributions are extrapolated to zero energy and integrated to obtain estimates of both number and thermal energy density. The number density is compared to independent observational and theoretical estimates. Combining the EPAS results with magnetic field and plasma data, we have obtained the β and Mach numbers of the flow in the region surrounding the comet.


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    Title :

    Bulk parameters of water group ions at comet Giacobini-Zinner


    Contributors:

    Published in:

    Advances in Space Research ; 12 , 8 ; 327-330


    Publication date :

    1992-01-01


    Size :

    4 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Bulk parameters of water group ions at Comet Giacobini-Zinner

    Staines, K. / Balogh, A. / Cowley, S. W. H. et al. | NTRS | 1992


    The plasma regime at comet Giacobini-Zinner

    Ogilvie, Keith W. | Elsevier | 1985