Observational test of a hot flow anomaly formation mechanism

Details Observational test of a hot flow anomaly formation mechanism Observational test of a hot flow anomaly formation mechanism

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....9511967o&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 95, Aug. 1, 1990, p. 11967-11974. Research sponsored by DOE.

Physics

12

Bow Waves, High Temperature Plasmas, Magnetosheath, Shock Waves, Solar Wind, Space Plasmas, Adiabatic Conditions, Interplanetary Magnetic Fields, Ion Beams, Magnetohydrodynamic Flow

Scientific paper

The hot-flow anomalies (HFAs) observed in the vicinity of the earth's bow shock, whose high-temperature plasma is strongly deflected relative to the solar wind and flanked by density and magnetic field enhancements, are presently addressed by a model in which the coupling of ions reflected off the shock with the solar wind would convert the relative streaming energy between the reflected and solar wind ions into thermal energy; the hot plasma would then expand to form the HFA. Attention is given to a simple observational test of this model, which compares the measured temperature and density with the values expected immediately after the assumed coupling and after expansion.

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