Bonn 2010 – wissenschaftliches Programm

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EP: Fachverband Extraterrestrische Physik

EP 8: Planets and Small Bodies I

EP 8.3: Vortrag

Dienstag, 16. März 2010, 17:15–17:30, AKM

Simulations of interstellar dust particle trajectories in our Solar System — •Veerle Sterken1,2, Sascha Kempf1,2, Nicolas Altobelli3, Eberhard Grün1,4, Ralf Srama1,5, and Gerhard Schwehm31MPIK, Heidelberg, Deutschland — 2IGEP, TU Braunschweig, Deutschland — 3ESAC, Madrid, Spain — 4University of Colorado, Boulder, US — 5IRS, Universität Stuttgart, Deutschland

Trajectory and density simulations of interstellar dust particles (ISD) in the heliosphere are presented, and relative ISD fluxes are derived at various locations in the Solar System. Special emphasis is put on the prediction of densities and fluxes at Cassini orbit. The simulation results show a fluctuation of the particle density with the Solar Cycle. The strength and shape of this fluctuation depends on particle surface optical properties and on the particle charging. Preliminary results predict the density fluctuations at Saturn orbit to stay in a range between 0 to 5 times the ISD-density at infinity. The strongest increase of ISD flux and density is expected at Saturn between 2005 and 2012, where the peak of the increment differs in time, for different particle sizes. The simulations can help predicting and reducing the data for various other interplanetary missions.

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