Other
Scientific paper
Nov 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pazh...17.1020g&link_type=abstract
Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 17, Nov. 1991, p. 1020-1030. In Russian. In Russian.
Other
2
Neptune (Planet), Orbital Resonances (Celestial Mechanics), Planetary Rings, Voyager 2 Spacecraft, Planetary Evolution, Planetary Orbits, Protoplanets
Scientific paper
The hypothesis of Gor'kavyi (1989) that the existence of an arc is possible if it is a set of epicyclic vortices (epitons) situated in the dust ring is considered. The particles of such elliptical vortices rotate around their mass center in epicycles. The identical periods of orbital rotation is due to the strict equality of the semimajor axes of the particles; consequently, the vortex is stable and does not disperse along the orbit. The continuous narrow ring leads to the equality of the semimajor axes of the epitons, which is a sure sign of the stability of many dozens of vortices. Voyager-2 photography of a regular chain of compact clumps situated in the arcs of Neptune is presented. The existence of such a structure is a direct confirmation of the epiton model; no other hypothesis provides for the possibility of the existence of an inner arc structure.
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