On charge exchange effect in the vicinity of the cometopause of Comet Halley

Details On charge exchange effect in the vicinity of the cometopause of Comet Halley On charge exchange effect in the vicinity of the cometopause of Comet Halley

Aug 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...343..946i&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 343, Aug. 15, 1989, p. 946-952.

Statistics

Computation

25

Charge Exchange, Halley'S Comet, Magnetohydrodynamic Flow, Solar Wind, Chemical Composition, Energy Distribution, Flow Distribution, Giotto Mission, Vega Project, Comets, Halley, Charge Exchange, Cometopause, Spacecraft Observations, Vega Missions, Giotto Mission, Chemistry, Thermal Properties, Streamlines, Energy, Distribution, Ions, Models, Magnetohydrodynamics, Depletion, Ims Instrument, Plasma, Solar Wind, Calculations, Oxygen, Water, Protons, Theoretical Studies

Scientific paper

In order to explore the physical nature of the cometopause observed at Comet Halley by the Vega spacecraft and by the Giotto probe, the chemical compositional changes and variations of the thermal-energy distributions of the water-group ions are examined, adopting a two-dimensional cometary-plasma flowfield model based on three-dimensional MHD simulations of Fedder et al. (1986). The charge-exchange loss of hot cometary ions and the solar-wind protons could be used to explain the observed number-density profiles quantitatively. The resulting exponential depletion of the hot-ion populations with a scale length of about 10,000 km occurs near 60,000-80,000 km along the trajectory of Giotto, as indicated by both theoretical computations and the ion-mass-spectrometer measurements. The formation of the cometopause located at about 140,000 km is therefore not necessarily as closely related to the charge-exchange process.

Affiliated with

Also associated with

No associations

Rating

On charge exchange effect in the vicinity of the cometopause of Comet Halley does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with On charge exchange effect in the vicinity of the cometopause of Comet Halley, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On charge exchange effect in the vicinity of the cometopause of Comet Halley will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1514957