Halley's comet dust particle mass spectra, flux distributions and jet structures derived from measurements on the Vega-1 and Vega-2 spacecraft

Details Halley's comet dust particle mass spectra, flux distributions and jet structures derived from measurements on the Vega-1 and Vega-2 spacecraft Halley's comet dust particle mass spectra, flux distributions and jet structures derived from measurements on the Vega-1 and Vega-2 spacecraft

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.250b..11s&link_type=abstract

In ESA Proceedings of the 20th ESLAB Symposium on the Exploration of Halley's Comet. Volume 2: Dust and Nucleus p 11-16 (SEE N87

Physics

1

Cosmic Dust, Flux Density, Halley'S Comet, Mass Spectra, Particle Laden Jets, Particle Mass, Vega Project, Radial Distribution, Spatial Distribution, Temporal Distribution

Scientific paper

The spatial and temporal distributions of coma dust particles with masses greater than 10-13g have been confirmed and extended to reveal additional properties of the coma. The reported inverse square dependence of flux with distance from the nucleus now shows well-defined envelope boundaries. Regions of enhanced fluxes inside these boundaries are identified as dust jets - one of which, observed near closest approach for VEGA-1, has been analyzed in detail. Tracing dust jets back to the nucleus shows a strong correlation with the active jet regions predicted by Sekanina and Larson. Clusters and packets of dust particles, each containing wide ranges of masses and numbers of particles, have been discovered, especially in the fringe regions of the coma.

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