The In-Situ Particulate Size Distribution Measured for One Comet: P/Halley

Details The In-Situ Particulate Size Distribution Measured for One Comet: P/Halley The In-Situ Particulate Size Distribution Measured for One Comet: P/Halley

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997arcn.rept..205m&link_type=abstract

Analysis of Returned Comet Nucleus Samples, Proceedings of a Workshop held at Milpitas, California, 16-18 January, 1989. Compil

Computer Science

Comet Nuclei, Particle Size Distribution, Mass Distribution, Halley''S Comet, Cosmic Dust, Particulates, Absorbers (Materials), Giotto Mission, Mass Spectrometers, Spectral Reflectance, Surface Properties, Mass Ratios, Rosetta Mission, Samples

Scientific paper

The comet Halley dust mass distribution measured by the Giotto DIDSY and PIA experiments is used to derive the dust to gas mass ratio micro for the nucleus material. The excess of grains observed for masses greater than 10-9 kg places micro in the range 1-200 if the observed size distribution is representative of the average properties of the coma. The lower bound corresponds to integration up to the largest particle (approx. 1g) impacting Giotto. The mass and area distributions at the nuclear surface for distributions with and without this large particle excess are compared.

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