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Dynamical Features of the Oort Cloud Comets
2009The Oort cloud which corresponds to the outer boundary of our Solar system, is considered to be the main reservoir of long period comets. At such distance from the Sun (several times 10 000 AU), the comet trajectories are affected by the galactical environment of the Solar System.
M. Fouchard +3 more
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Dynamics of comets in the collapsing protosolar nebula
International Astronomical Union Colloquium, 1999AbstractComets are created in the cool, dense regions of interstellar clouds. These macroscopic bodies take place in the collapse of protostar cloud as mechanically moving bodies in contrast to the gas and miscroscopic dust holding the laws of hydrodynamics.
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A dynamical study on extrasolar comets
2017Since the detection of absorption features in spectra of beta Pictoris varying on short time scales it is known that comets exist in other stellar systems. We investigate the dynamics of comets in two differently build systems (HD 10180 and HIP 14810).
Loibnegger, Birgit, Dvorak, Rudolf
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On the Chaotic Dynamics of Comet 1P/Halley
Summary: The comet Halley presents a very short Lyapunov time. It is of the order of just one orbital period. However, it does not show any strong chaotic radial characteristic in a timescale of tens of orbital periods. That can be interpreted as a confined chaotic motion.Othon Winter +2 more
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A Dynamical Study of Possible Birthplaces of Comets
1982The orbital evolution of comets with different assumed birthplaces, namely the Uranus-Neptune region, the Jupiter region and ‘in-situ’ from where ‘new’ comets seem to come, is followed numerically throughout the solar system lifetime. Perturbations of the four giant planets and random passing stars are considered.
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The dynamical lifetime of comet P/Halley
1988Using an extension of Opik’s techniques the stability of the orbit of Halley’s comet under close encounters with the planets is investigated, and it is found that the orbital changes due to such encounters expected over a long time-base are of the same order as the effects of more distant planetary perturbations and non-gravitational effects.
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