Energetic neutral atom imaging of Mercury's magnetosphere 2. Distribution of energetic charged particles in a compact magnetosphere

Details Energetic neutral atom imaging of Mercury's magnetosphere 2. Distribution of energetic charged particles in a compact magnetosphere Energetic neutral atom imaging of Mercury's magnetosphere 2. Distribution of energetic charged particles in a compact magnetosphere

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001p%26ss...49.1677l&link_type=abstract

Planetary and Space Science, Volume 49, Issue 14-15, p. 1677-1684.

Physics

9

Scientific paper

In order to investigate the feasibility of energetic neutral atom (ENA) imaging of Mercury's magnetosphere interacting with the tenuous exosphere, we developed a simple model simulating dynamics of hot proton plasma near Mercury. We did not consider specific acceleration mechanisms but parameterised the proton source by its location, size and the distribution function of the injected protons. The characteristics of the source are free parameters of the model and can be easily varied. To model the magnetic field in the magnetosphere we used the Tsyganenko's model scaled for Mercury's conditions. The dynamics of energetic protons 1keV50keV, the large Larmour radius results in their almost immediate loss via intercepting the Hermean magnetopause. The model was tested for 10, 30, and 50keV protons injected from a source of the size 1Rm×1Rm located at 3Rm,2.5Rm,2Rm, and 1.5Rm in the tail (Rm is the Hermean radius). This simple model turned out to be rather useful and flexible, and can be used to study proton dynamics in Mercury's magnetosphere.

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