Dust density and mass distribution near comet Halley from Giotto observations

Details Dust density and mass distribution near comet Halley from Giotto observations Dust density and mass distribution near comet Halley from Giotto observations

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.321..338m&link_type=abstract

Nature (ISSN 0028-0836), vol. 321, May 15, 1986, p. 338-341. Research supported by the National Space Agency of Sweden, SERC, BM

Astronomy and Astrophysics

Astronomy

99

Cosmic Dust, Density Distribution, Giotto Mission, Halley'S Comet, Mass Distribution, Spaceborne Astronomy, Astronomical Spectroscopy, Comet Nuclei, Particle Size Distribution

Scientific paper

The density and the mass spectrum of the dust near comet Halley have been measured by the Giotto space probe's dust impact detection system. The dust spectrum obtained at 291,000 km from the comet nucleus show depletion in small and intermediate masses; at about 600 km from the nucleus, however, the dust activity rises and the spectrum is dominated by larger masses. Most of the mass striking Giotto is noted to reside in the few large particles penetrating the dust shield. Momentum balances and energy considerations applied to an observed deceleration suggest that a large mass of the spacecraft was detached by an impact.

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