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          Institute: MPI für Kernphysik     Collection: Interplanetary Dust Physics     Display Documents



  history
ID: 207030.0, MPI für Kernphysik / Interplanetary Dust Physics
Modelling the Environment of 67P/Churyumov--Gerasimenko
Authors:Agarwal, Jessica; Müller, M.; Grün, Eberhard
Language:English
Publisher:Kluwer Academic Publishers
Place of Publication:Dordrecht, Netherlands
Date of Publication (YYYY-MM-DD):2004
Title of Proceedings:The New Rosetta Targets Observations, Simulations and Instrument
Full Name(s) of Series Editor(s):W.B. Burton
Start Page:143
End Page:152
Title of Series:ASTROPHYSICS AND SPACE SCIENCE LIBRARY
Volume (in Series):311
Full Name(s) of Series Editor(s):W.B. Burton
Name of Conference/Meeting:The New Rosetta Targets Observations, Simulations and Instrument Performances
Place of Conference/Meeting:Capri
(Start) Date of Conference/Meeting
 (YYYY-MM-DD):
2003-10-13
End Date of Conference/Meeting 
 (YYYY-MM-DD):
2003-10-15
Copyright:Kluwer Academic Publishers
Review Status:not specified
Audience:Experts Only
Abstract / Description:The ESA Cometary Environment Model is applied to
comet 67P/Churyumov-Gerasimenko (C-G). From observed gas and dust production rates the model allows us to determine the conditions in the inner coma of a comet. Assuming a spherical nucleus and an axis symmetric surface activity, the densities and velocities of the gas and of dust particles are calculated as functions of location in the coma. The model is also used to estimate the infrared and visible radiation received by an observer inside the coma due to dust. Observational data for the activity of C-G are available mainly from the apparitions in 1982/83 and 2002/03. For an insolation-driven activity model corresponding to a homogenous surface composition, the results for C-G are compared to those obtained earlier for P/Wirtanen. In order to derive an upper limit for the local densities inside a jet, a Gaussian activity profile centred at the subsolar point is considered.
External Publication Status:published
Document Type:Conference-Paper
Affiliations:MPI für Kernphysik/Group K. Mauersberger/Interplantary Dust Research (E. Grün)
External Affiliations:European Space Operations Centre, Darmstadt
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