An overview of energetic particles (from 55 keV to > 30 MeV) recorded in the close Martian environment, and their energization in local and external processes

摘要: Abstract Observations made by the SLED particle detector on Phobos-2 in close Martian environment from 29 January to 27 March, 1989 during early rising phase of Solar Cycle 22, show frequent presence planet, under reasonably “quiet” interplanetary conditions, particles with energies ( E ) range several tens of, hundred, keV. Under disturbed circumstances, reaching MeV were recorded Mars. Those keV observed at well-defined locations, i.e. Terminator Shocks up ≈600 keV); just inside subsolar Planetopause ≈225 keV), and travelling down Tail, ≥55 These three populations are herein suggested, instancing various candidate mechanisms, have been energized processes local planet. Since seed for ions accelerated may comprise ambient, pre-accelerated, solar particles, detected Bow Shock transits was (during two months) vary between ≈50 Particles which found suffuse planetary over extended periods, interpreted produced association external Mars (Co-rotating Interaction Regions; Gradual Impulsive Events). Particle enhancements (under favourable magnetic conditions) traversals, provide topographical information concerning location distant shock surfaces. observations constitute a new data set, complementary those determinations key boundaries derived plasma field measurements aboard American Russian spacecraft which, more than thirty years now, generally used modelling Wind interaction Three-dimensional low altitudes long dwell times presently required further insights into whereby discovered data, inbound individually energized.