Physics
Scientific paper
Jul 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993spie.2008..135m&link_type=abstract
Proc. SPIE Vol. 2008, p. 135-141, Instrumentation for Magnetospheric Imagery II, Supriya Chakrabarti; Ed.
Physics
Scientific paper
The concept of using solar EUV line resonance scattering to image ion populations in the magnetosphere has been studied extensively in the last decade. Global magnetospheric EUV images can display the effects of scatterer density, injection, the geomagnetic field, and the changing perspective of earthshine source intensity with altitude, latitude, and local time. Successful use of these images for magnetospheric plasma diagnostics or for examining the morphology of the magnetosphere will depend upon properly accounting for these effects and incorporating them into the models used to interpret such images. The importance of each of these effects is examined for varying levels of magnetospheric activity and different observer perspectives. This work utilizes oxygen 834 angstroms resonance scattering as a testbed for this examination. A Tsyganenko 1987 magnetospheric model is employed to study the effects of different levels of magnetospheric activity. The resonance scattering formulation employed assumes an optically thin magnetospheric medium, with full inclusion of Doppler shift effects, for 834 angstroms radiation; Monte Carlo techniques are used for the construction of simulated magnetospheric images.
Chiu Yam T.
Murphy Daniel L.
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