Physics – Plasma Physics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufm.p41c1624h&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #P41C-1624
Physics
Plasma Physics
[2780] Magnetospheric Physics / Solar Wind Interactions With Unmagnetized Bodies, [5421] Planetary Sciences: Solid Surface Planets / Interactions With Particles And Fields, [6250] Planetary Sciences: Solar System Objects / Moon, [7833] Space Plasma Physics / Mathematical And Numerical Techniques
Scientific paper
Bodies that lack a significant atmosphere and internal magnetic fields, such as the Moon, are obstacles to the solar wind. The solar wind ions and electrons directly impact the surface of the Moon due to the lack of atmosphere, and the interplanetary magnetic field passes through the obstacle relatively undisturbed. Since the solar wind is absorbed by the bodies, a wake is created behind the object. This wake is gradually filled by solar wind plasma downstream of the body, through thermal expansion and the resulting ambipolar electric field, along the magnetic field lines. Here we investigate the global Moon-solar wind interaction using a hybrid model (particle ions, fluid electrons). We focus in particular on the morphology of the wake region, and how it responds to changing solar wind conditions. The model predictions are compared to plasma observations by NASA's ARTEMIS spacecrafts.
Halekas Jasper S.
Holmström Mats
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