期刊
SPACE SCIENCE REVIEWS
卷 128, 期 1-4, 页码 133-166出版社
SPRINGER
DOI: 10.1007/s11214-006-9142-6
关键词
comet; huryumov-Gerasimenko; plasma; hybrid simulation; MHD simulation
The plasma environment of comet 67P/Churyumov-Gerasimenko, the Rosetta mission target comet, is explored over a range of heliocentric distances throughout the mission: 3.25 AU (Rosetta instruments on), 2.7 AU (Lander down), 2.0 AU, and 1.3 AU (perihelion). Because of the large range of gas production rates, we have used both a fluid-based magnetohydrodynamic (MHD) model as well as a semi-kinetic hybrid particle model to study the plasma distribution. We describe the variation in plasma environs over the mission as well as the differences between the two modeling approaches under different conditions. In addition, we present results from a field aligned, two-stream transport electron model of the suprathermal electron flux when the comet is near perihelion.
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