Other
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agusmsh51a..06m&link_type=abstract
American Geophysical Union, Spring Meeting 2007, abstract #SH51A-06
Other
2124 Heliopause And Solar Wind Termination, 2126 Heliosphere/Interstellar Medium Interactions, 2144 Interstellar Gas, 7837 Neutral Particles (2151)
Scientific paper
Modeling of the global heliosphere seeks to investigate the interaction of the solar wind with the partially ionized local interstellar medium. Models that treat neutral hydrogen self-consistently and in great detail together with the plasma, but neglect magnetic fields, constitute a sub-category within global heliospheric models. There are several different modeling strategies used in the literature, and this contribution seeks to point out differences and commonalities in the modeling results from different strategies. Plasma-only models, and fully self- consistent models from four research groups, for which the neutral species is modeled with either one, three, or four fluids or kinetically, are run with the same boundary parameters and equations. They are compared to each other with respect to the locations of key heliospheric boundary locations, and with respect to the neutral hydrogen content throughout the heliosphere. In many respects, the models basically agree. In particular, the locations of the termination shock agree to within 7% in the nose direction and to within 14% in the downwind direction. The nose locations of the heliopause agree to within 5%. The filtration of neutral hydrogen from the interstellar medium into the inner heliosphere, however, is model dependent, and possible physical reasons for this are discussed.
Alexashov Dimitry
Fahr Hans Jörg
Florinski Vladimir
Heerikhuisen Jacob
Izmodenov Vladislav V.
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