Cometary grains and interplanetary dust: A polarimetric sensing

Details Cometary grains and interplanetary dust: A polarimetric sensing Cometary grains and interplanetary dust: A polarimetric sensing

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987esasp.278..419d&link_type=abstract

In ESA, Proceedings of the International Symposium on the Diversity and Similarity of Comets p 419-421 (SEE N88-21884 14-91)

Physics

1

Halley'S Comet, Interplanetary Dust, Polarimetry, Comet Nuclei, Poynting-Robertson Effect, Space Observations (From Earth)

Scientific paper

Physical properties of the solid grains ejected from the nucleus of comet P/Halley were studied by optical telescopic polarimetry. In the coma, the presence of a large number of fluffy aggregates made of very dark small particles is indicated. Such flakes are subjected to the Poynting-Robertson effect which reduces the major axis of their orbits, and they are progressively transported in the inner part of the Solar System. It is suggested that the fluffy aggregates known to produce the zodiacal light, and those collected as Brownlee particles in the upper atmosphere, originate directly as such from comets.

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