Statistics – Computation
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsh21b1508a&link_type=abstract
American Geophysical Union, Fall Meeting 2009, abstract #SH21B-1508
Statistics
Computation
[0545] Computational Geophysics / Modeling, [2114] Interplanetary Physics / Energetic Particles, [2126] Interplanetary Physics / Heliosphere/Interstellar Medium Interactions, [2152] Interplanetary Physics / Pickup Ions
Scientific paper
We study the source (starting inside the termination shock) and transport of pick-up ions (PUI) linked to the generation of energetic neutral atoms (ENA). We use a three dimensional multi-fluid (seven populations: thermal protons, four neutral populations, PUI ions and ENA) magneto-hydrodynamic model. PUIs are injected into the simulation grid as an inner-boundary condition at 30 AU and appropriate PUI source terms are included inside the heliopause. At the inner-boundary, the PUI initial density and temperature are derived analytically assuming a Vasyliunas-Siscoe distribution function for these suprathermal particles. PUI production beyond the heliopause is neglected. The variations in the non-thermal solar wind pressure inside the heliopause as a result of PUI production and convection are analyzed. Implications of these pressure variations on the heliospheric boundaries and resulting ENA maps are discussed.
Alouani Bibi F.
Opher Merav
Prested C. L.
Schwadron Nathan A.
Tóth Géza
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