Abstract
The results presented were obtained from experiments with temporal resolution of 0.02 to 1.28 sec that were carried out on board Prognoz 8 and 10 satellites. The following parameters and their changes after bow shock crossing have been taken into account: three dimensional drift velocity of total ion flow and ion temperature, and their fluctuations. The bow shock crossings under study involve both quasiparallel and quasiperpendicular strong shocks. In this paper, slow quasiperiodic fluctuations (10 −4 + 10 Hz) in the downstream region are studied and the relation between these fluctuations and energy distribution function variations is discussed. Data from 13 selected shock wave crossings were used to investigate how the frequency of the oscillations depends on parameters characteristic for particular crossings.
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