SH13B-4124:
The role of the heliosphere for interstellar dust trajectories - revisited
Monday, 15 December 2014
Veerle J Sterken1, Peter Strub1, Harald Krüger2, Rudolf von Steiger3 and Eberhard Grün1,4, (1)MPIK / Max-Planck-Institut für Kernphysik, Heidelberg, Germany, (2)Max-Planck-Institut für Sonnensystemforschung, Planets and Comets, Goettingen, Germany, (3)International Space Science Institute, Bern, Switzerland, (4)LASP/University of Colorado, Boulder, CO, United States
Abstract:
Interstellar dust (ISD) moves through the solar system due to the relative motion of the solar system and the local interstellar cloud, at a speed of about 26 km/s. Most of the knowledge on these ISD trajectories and their interplay with the interplanetary magnetic field come from dust impact measurements using the Ulysses dust detector in combination with modelling of the ISD trajectories. In this talk we explain the dynamics of interstellar dust in the heliosphere, we discuss in detail the resulting fluxes and directions of the ISD flow at the location of Ulysses, we put this in context with existing data, review the influence of three different descriptions of the IMF on the modelling, and finally we conclude with the role of the boundary region of the heliosphere on the ISD flux.
