Dust shell of Comet Halley according to data obtained with the PUMA instrument

Details Dust shell of Comet Halley according to data obtained with the PUMA instrument Dust shell of Comet Halley according to data obtained with the PUMA instrument

Nov 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987kosis..25..840s&link_type=abstract

Kosmicheskie Issledovaniia (ISSN 0023-4206), vol. 25, Nov.-Dec. 1987, p. 840-848. In Russian.

Astronomy and Astrophysics

Astronomy

2

Cometary Atmospheres, Cosmic Dust, Grain Size, Halley'S Comet, Mass Spectrometers, Satellite-Borne Instruments, Astronomical Spectroscopy, Atmospheric Composition, Particle Size Distribution, Spaceborne Experiments, Vega Project

Scientific paper

Measurements made with the Vega PUMA instrument indicate the presence of dust particles as small as 5 x 10 to the -17th g in the dust coma of Comet Halley. The dust shell has a diffuse boundary, and fine dust is detectable at distances as great as 500,000 km. The dust shell is highly inhomogeneous; narrow zones of high dust flux density are present which indicate the presence of intense local sources on the surface of the nucleus.

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