Physics
Scientific paper
May 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agusmsh31a..01m&link_type=abstract
American Geophysical Union, Spring Meeting 2002, abstract #SH31A-01
Physics
2124 Heliopause And Solar Wind Termination, 2144 Interstellar Gas, 2151 Neutral Particles, 2152 Pickup Ions
Scientific paper
The numerical modeling of the interaction of the partially ionized local interstellar medium with the solar wind is complex and rich in details. An ideal model on global heliospheric scales typically includes the magnetohydrodynamics of the encounter of two hydrogen plasma winds (solar and interstellar wind, with magnetic fields), modified by the interaction with neutral atoms of interstellar origin. This nonlinear interaction gives rise to feedback on the plasma distributions via the pickup process, and to an essentially non-Maxwellian neutral distribution function throughout the heliosphere. The latter requires a complex treatment of the neutrals in the numerical models. We give an overview of current efforts to model the global heliosphere and some key results, including the filtration of interstellar neutrals at heliospheric boundary regions before entering the inner heliosphere. These efforts include also the study of the heliolatitude dependence of the sun at minimum, the time-dependence of the solar wind, and the inclusion of elements heavier than hydrogen into the model.
Mueller Hans-Reinhard
Zank Gary P.
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