Space Science Reviews

, Volume 34, Issue 2, pp 113–126 | Cite as

Ion acceleration at shocks in interplanetary space: A brief review of recent observations

  • J. T. Gosling
Article

Abstract

The mechanism by which ions are accelerated near the Earth's bow shock and near shocks propagating outward from the Sun in response to solar activity appears to be essentially the same. For both types of shock the solar wind thermal distribution acts as a seed population. Leaked magnetospheric ions and resident flare ions are additional seed populations for the bow shock and outward propagating shocks respectively. The acceleration of solar wind ions at these shocks begins with either the reflection of ions off the shock or leakage of shocked plasma back through the shock. Interaction with a disruption wave field self-generated by these backstreaming ions is responsible for the remainder of the acceleration at the bow shock. Both the disruption wave field and the ambient interplanetary wave field play important roles in accelerating ions at outward propagating shocks, but on different time scales. The geometry of the shock and the duration of field line connection to the shock play decisive roles in determining what is observed.

Keywords

Reflection Flare Solar Wind Solar Activity Field Line 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© D. Reidel Publishing Co 1983

Authors and Affiliations

  • J. T. Gosling
    • 1
  1. 1.University of California, Los Alamos National LaboratoryLos AlamosUSA

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