Energetic Water-Group Ions at Comet Giacobini-Zinner: An Overview of Observations by the EPAS Instrument

  1. Alan Johnstone
  1. S. W. H. Cowley1,
  2. A. Balogh1,
  3. R. J. Hynds1,
  4. K. Staines1,
  5. T. S. Yates1,
  6. P. W. Daly2,
  7. I. G. Richardson3,
  8. T. R. Sanderson4,
  9. C. Tranquille4 and
  10. K.-P. Wenzel4

Published Online: 26 MAR 2013

DOI: 10.1029/GM061p0319

Cometary Plasma Processes

Cometary Plasma Processes

How to Cite

Cowley, S. W. H., Balogh, A., Hynds, R. J., Staines, K., Yates, T. S., Daly, P. W., Richardson, I. G., Sanderson, T. R., Tranquille, C. and Wenzel, K.-P. (1991) Energetic Water-Group Ions at Comet Giacobini-Zinner: An Overview of Observations by the EPAS Instrument, in Cometary Plasma Processes (ed A. Johnstone), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM061p0319

Author Information

  1. 1

    Blackett Laboratory, Imperial College, London SW7 2BZ, UK

  2. 2

    Max-Planck-Institut fur Aeronomie, D-3411 Katlenburg-Lindau, FR Germany

  3. 3

    NASA/Goddard SFC, Greenbelt, MD 20771, USA

  4. 4

    European Space Agency, ESTEC, NL-2200 AG Noordwijk, The Netherlands

Publication History

  1. Published Online: 26 MAR 2013
  2. Published Print: 1 JAN 1991

ISBN Information

Print ISBN: 9780875900278

Online ISBN: 9781118663660

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Keywords:

  • Comets;
  • Space plasmas;
  • Astrophysics

Summary

An overview is presented of the observations of energetic (45–480 keV) cometary water group ions made by the EPAS instrument on the ICE spacecraft during the fly-by of comet Giacobini-Zinner in September 1985. The discussion covers ion observations in the large-scale ion pick-up region surrounding the comet on ∼106 km spatial scales, observations of the cometary shock at ∼105 km and the region of slowed mass-loaded flows which occur downstream, and the finite gyroradius effects which occur near closest approach.