6533b7d6fe1ef96bd1265b25

RESEARCH PRODUCT

Chaotic dynamics around cometary nuclei

Guillaume RollinIvan I. ShevchenkoIvan I. ShevchenkoIvan I. ShevchenkoJosé Lages

subject

Lyapunov function010504 meteorology & atmospheric sciences[PHYS.ASTR.EP]Physics [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP]CometChaoticFOS: Physical sciencesAstrophysics01 natural sciencessymbols.namesake0103 physical sciences010303 astronomy & astrophysics0105 earth and related environmental sciencesPhysicsEarth and Planetary Astrophysics (astro-ph.EP)AstronomyAstronomy and AstrophysicsNonlinear Sciences - Chaotic DynamicsCelestial mechanicsNonlinear Sciences::Chaotic DynamicsSpace and Planetary Science[NLIN.NLIN-CD]Nonlinear Sciences [physics]/Chaotic Dynamics [nlin.CD]symbolsHill sphereAstrophysics::Earth and Planetary AstrophysicsChaotic Dynamics (nlin.CD)Eccentricity (mathematics)Astrophysics - Earth and Planetary Astrophysics

description

We apply a generalized Kepler map theory to describe the qualitative chaotic dynamics around cometary nuclei, based on accessible observational data for five comets whose nuclei are well-documented to resemble dumb-bells. The sizes of chaotic zones around the nuclei and the Lyapunov times of the motion inside these zones are estimated. In the case of Comet 1P/Halley, the circumnuclear chaotic zone seems to engulf an essential part of the Hill sphere, at least for orbits of moderate to high eccentricity.

yearjournalcountryeditionlanguage
2017-10-01
https://dx.doi.org/10.48550/arxiv.1710.10110