Bulk parameters of water group ions at comet Giacobini-Zinner

K. Staines, A. Balogh, S. W.H. Cowley, R. J. Hynds, T. S. Yates, I. G. Richardson, T. R. Sanderson, K. P. Wenzel, D. J. McComas, B. T. Tsurutani

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish (US)
Pages (from-to)327-330
Number of pages4
JournalAdvances in Space Research
Issue number8
StatePublished - Aug 1992
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Astronomy and Astrophysics
  • Geophysics
  • Atmospheric Science
  • Space and Planetary Science
  • General Earth and Planetary Sciences


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