Position and structure of the Comet Halley bow shock - Vega-1 and Vega-2 measurements

Details Position and structure of the Comet Halley bow shock - Vega-1 and Vega-2 measurements Position and structure of the Comet Halley bow shock - Vega-1 and Vega-2 measurements

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986georl..13..841g&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 13, Aug. 1986, p. 841-844.

Physics

39

Bow Waves, Halley'S Comet, Shock Waves, Solar Wind, Space Plasmas, Interplanetary Magnetic Fields, Ion Motion, Plasma Diagnostics, Vega Project

Scientific paper

The effect of solar wind loading by cometary ions on the position and structure of the comet Halley bow shock is discussed on the basis of simultaneous measurements of plasma, magnetic field and plasma waves aboard the "Vega-1" and "Vega-2" spacecraft. Data from the inbound crossings of the bow shock show that both quasiperpendicular ("Vega-1") and quasiparallel ("Vega-2") shocks were observed. The thickness of these shocks is greater than that of the Earth's bow shock at least by the ratio of the masses of cometary ions and protons. The bow shock position is reasonably well described by the kinetic model of solar wind loading by cometary ions.

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