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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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)|
|Title:||Large dust particles around cometary nuclei|
|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|
|HGF - Program Themes:||W EW - Erforschung des Weltraums|
|DLR - Research area:||UNSPECIFIED|
|DLR - Program:||W EW - Erforschung des Weltraums|
|DLR - Research theme (Project):||UNSPECIFIED|
|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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