Energetic comets versus the sun's companion

Details Energetic comets versus the sun's companion Energetic comets versus the sun's companion

Dec 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979natur.282..696w&link_type=abstract

Nature, vol. 282, Dec. 13, 1979, p. 696, 697. Research supported by the Deutsche Forschungsgemeinschaft.

Astronomy and Astrophysics

Astronomy

3

Comets, Nemesis (Star), Solar System, Stellar Motions, Sun, Black Holes (Astronomy), Companion Stars, Neutron Stars, Orbit Perturbation, Comets, Sun, Gravitational Effects, Orbits, Dynamics

Scientific paper

The paper examines theories postulating the presence of another star or energetic comets near the sun. Recent work tended to rule out all possibilities except a neutron star or black hole making a high-speed, transient encounter with the sun; it is shown here that due to its gravitational pull, a large fraction of the comets coming into the solar system from distances of 40,000 AU and greater would arrive with positive energy (hyperbolic) orbits. In reality, however, the original incoming orbits compensated with planetary perturbations are seldom hyperbolic, and a fast-moving companion cannot exist in a 500 to 10,000 AU R range.

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