Properties of the Oort cloud and the origin of comets

Details Properties of the Oort cloud and the origin of comets Properties of the Oort cloud and the origin of comets

Nov 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.259...37c&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 259, no. 1, p. 37-46.

Statistics

Computation

1

Celestial Mechanics, Comets, Computational Astrophysics, Evolution (Development), Oort Cloud, Astronomical Models, Gas Giant Planets, Gravitational Effects, Many Body Problem, Milky Way Galaxy, Monte Carlo Method

Scientific paper

Results of a numerical simulation aimed at studying the structure and stability of the Oort cloud and the origin of comets are reported. An N-body simulation was performed to describe Oort cloud bodies, stars in the solar neighborhood, and vertical oscillation due to the self-gravity of the Galactic disc as well as Jupiter and Saturn. The direct approach made it possible to simulate the actual physical system very accurately and to overcome the limitations of the Monte Carlo simulations. The evolution of the Oort cloud and the stars was studied for a period of 1.6 x 10 exp 8 yr, and a variety of important physical processes taking place in the system were observed. It is concluded that the Oort cloud is very stable under stellar perturbations, with a half-life well beyond 3 million years.

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