Forced precession of the cometary nucleus with randomly placed active regions

The cometary nucleus is assumed to be triaxial or axisymmetric spheroid rotating about its axis of maximum moment of inertia and is forced to precess due to jets of ejected material. Randomly placed regions of exposed ice on the surface of the nucleus are assumed to produce gas and dust. The solution of the heat conduction equation for each active region is used to find the gas sublimation rate and the jet acceleration. Precession of the comet nucleus is followed numerically using a phase-averaged system of equations. The gas production curves and the variation of the spin axis during the orbital motion of the comet are presented

Non-gravitational effects and activity of comet C/2006 W3 (Christensen) and C/2008 Q3 (Garradd)

International audienc

Non-gravitational effects and activity of comet C/2006 W3 (Christensen) and C/2008 Q3 (Garradd)

International audienc

Non-gravitational effects and activity of comet C/2006 W3 (Christensen) and C/2008 Q3 (Garradd)

International audienc

Comet 10P/Tempel 2 Outgassing Observed with Herschel Space Observatory

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Detection of Water Vapor in Comet 81P/Wild2 by Herschel

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Molecular abundances in comet 103P/Hartley 2 observed with the Arizona Radio Observatory

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Detection of Water Vapor in Comet 81P/Wild2 by Herschel

International audienc

Comet 103P/Hartley

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