Simulation of ICE-Giacobini-Zinner and Vega/Giotto-Halley encounters

Details Simulation of ICE-Giacobini-Zinner and Vega/Giotto-Halley encounters Simulation of ICE-Giacobini-Zinner and Vega/Giotto-Halley encounters

Jun 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986em%26p...35..119r&link_type=abstract

Earth, Moon, and Planets (ISSN 0167-9295), vol. 35, June 1986, p. 119-123.

Physics

1

Cometary Atmospheres, Giacobini-Zinner Comet, Halley'S Comet, Solar Wind, Space Probes, Collisional Plasmas, Gas Dynamics, Giotto Mission, Plasma Interactions, Shock Wave Interaction, Space Rendezvous, Vega Project

Scientific paper

Using the nonstationary gasdynamic model of Bierman et al. (1967), the evolution towards a bow shock in the plasma flow around a comet from an initial state which is free of any discontinuity is studied for several gas production rates between 2.2 x 10 to the 30th/s and 2.2 x 10 to the 25th/s, including those of comet Giacobini-Zinner and comet Halley at 1 AU. Photoionization is the only ionization mechanism considered. The model indicates that no shock will be detectable along the ICE path, and that if the Vega/Giotto spacecraft enters the cometary atmosphere, a shock will only be expected when the spacecraft leaves the Halley atmosphere.

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