Tomography of the Heliosphere: Ulysses Dust Measurements

Details Tomography of the Heliosphere: Ulysses Dust Measurements Tomography of the Heliosphere: Ulysses Dust Measurements

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsh21a1804j&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SH21A-1804

Physics

[2126] Interplanetary Physics / Heliosphere/Interstellar Medium Interactions, [2129] Interplanetary Physics / Interplanetary Dust

Scientific paper

We report on the modeling of the motion of interstellar dust particles through the heliosphere and compare these calculations with the Ulysses observations. While the flux and direction of interstellar dust particles are expected to be constant, the Ulysses measurements show that both area function of time. The observed variability has been suggested to be related to the configuration of the magnetic fields in the heliosphere. Since the observed dust particles travel for about 20 years from interstellar space to the inner solar system, they experience electromagnetic perturbations due the heliospheric magnetic fields through almost two complete solar cycles. Matching the modeled and measured dust fluxes is an excellent indicator of the validity of our models of the history and large-scale structure of magnetic fields in the heliosphere.

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