Anisotropic nonstationary gas flow dynamics in the coma of Comet Halley

Details Anisotropic nonstationary gas flow dynamics in the coma of Comet Halley Anisotropic nonstationary gas flow dynamics in the coma of Comet Halley

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.250a.523k&link_type=abstract

In ESA Proceedings of the 20th ESLAB Symposium on the Exploration of Halley's Comet. Volume 1: Plasma and Gas p 523-527 (SEE N87

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1

Anisotropy, Halley'S Comet, Outgassing, Rarefied Gas Dynamics, Computational Fluid Dynamics, Gas Jets, Steady State

Scientific paper

One of the major results from the GIOTTO and VEGA observations was that the gas outflow from the nucleus should be far from being spherically symmetric. The authors present results from numerical model calculations which address four particular outflow patterns that may occur at comet Halley: (a) steady state outflow dominated by a strong gas source at the subsolar point and (b) a steady state gas flow caused by a ring-like outgassing region. In both cases they find that the anisotropies introduced at the comet's surface are maintained out to rather large distances, i.e. several thousand kilometers. In addition to the steady state solutions they discuss the transient stages of the gas flow immediately after onset or offset of the strong outgassing at the subsolar point.

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