Physics
Scientific paper
Jan 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jgr....91..277s&link_type=abstract
Journal of Geophysical Research, Volume 91, Issue A1, p. 277-286
Physics
17
Scientific paper
Recent results regarding the interactions between a body and its environmental space plasma, made by charged particle probes mounted in the bay of the space shuttle Orbiter Columbia (STS 3 mission), are compared with earlier results, obtained from small ionospheric satellites, in an attempt to widen our scope of knowledge and understanding regarding such interactions. The objective is to work toward a unified model of body-space plasma interactions in the solar system covering a variety of plasma and body conditions. The comparisons focus mainly on (1) the (wake/ram) current ratio; (2) the generation of charged particle density fluctuations (indicative of plasma turbulence) around the body; and (3) the increase in electron temperature ahead and in the wake of the satellite. The main results of the comparison are that (1) the (wake/ram) current ratio (or current depletion in the wake) for the Orbiter is 1 to 2 orders of magnitude larger than the ratio for small ionospheric satellites; and (2) fluctuations in density (or turbulence) are observed for both ``large body'' (shuttle Orbiter) and ``smaller body'' (standard ionospheric satellites). However, the cause of the turbulence may not be the same for both cases; (3) the results for the electronic temperature enhancement due to the shuttle Orbiter are in contrast with measurements from smaller ionospheric satellites. We suggest a path to follow in future shuttle experiments and caution that care be taken in interpreting local particle and field measurements.
Samir Uri
Stone Nobie H.
Wright K. H.
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