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Large dust particles around cometary nuclei

Knollenberg, J. and Kührt, E. (1997) Large dust particles around cometary nuclei. DPS Annual Meeting, 28 July - 1 August, 1997, Boston, USA.

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Abstract

The dynamics of large dust partcles in the vicinity of rotating cometary nuclei is investigated using a computational model which includes effects of gas drag, nucleus gravity and inertia forces as well as tidal and radiation pressure forces. The drag force is provided by an axysymmetric continuum models of gas flow originating from an active region on the nucleus. It is shown that, dependent on the particle size distribution, up to some percent of the totally ejected dust mass could fall back onto the nucleus. The redistribution of particles on the nucleus surface and consequences for the mantle growth process are considered. Furthermore, a minor fraction of the dust could be launched in orbits around the comet. The results are discussed in the context of available observational evidence and possible implications concerning the ESA ROSETTA missionto comet P/Wirtanen.

Document Type:Conference or Workshop Item (Speech)
Additional Information: LIDO-Berichtsjahr=1997,
Title:Large dust particles around cometary nuclei
Authors:
AuthorsInstitution or Email of Authors
Knollenberg, J.UNSPECIFIED
Kührt, E.UNSPECIFIED
Date:1997
Status:Published
Event Title:DPS Annual Meeting
Event Location:Boston, USA
Event Type:international Conference
Event Dates:28 July - 1 August, 1997
HGF - Research field:UNSPECIFIED
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:UNSPECIFIED
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):UNSPECIFIED
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Institut für Planetenerkundung
Deposited By: elib DLR-Beauftragter
Deposited On:02 Apr 2006
Last Modified:26 Aug 2010 13:51

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