Stochastic particle acceleration by a pair of slow shocks

Nobue Shimada, Toshio Terasawa, J. Randy Jokipii

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We consider a stochastic acceleration mechanism of charged particles working at a pair of slow MHD shocks. The dominant acceleration occurs when a particle has a curvature drift at the shock front, which is parallel to the convection electric field. Since this acceleration mechanism works only on particles crossing the shock front, scattering agents in the upstream region are needed for the successive acceleration. The final energy spectrum, which is determined by the balance among the acceleration, deceleration, and escape processes, is softer than the power law. We suggest that this new acceleration mechanism in the reconnection region can provide the possibility to create high-energy particles in the magnetotail.

Original languageEnglish (US)
Article number97JA02032
Pages (from-to)22301-22310
Number of pages10
JournalJournal of Geophysical Research: Space Physics
Volume102
Issue numberA10
StatePublished - 1997

Fingerprint

particle acceleration
shock
shock fronts
magnetotails
magnetotail
Deceleration
deceleration
Charged particles
Magnetohydrodynamics
particle energy
upstream
curvature
escape
energy
particle
electric field
charged particles
power law
energy spectra
convection

ASJC Scopus subject areas

  • Oceanography
  • Astronomy and Astrophysics
  • Atmospheric Science
  • Space and Planetary Science
  • Earth and Planetary Sciences (miscellaneous)
  • Geophysics
  • Geochemistry and Petrology

Cite this

Stochastic particle acceleration by a pair of slow shocks. / Shimada, Nobue; Terasawa, Toshio; Jokipii, J. Randy.

In: Journal of Geophysical Research: Space Physics, Vol. 102, No. A10, 97JA02032, 1997, p. 22301-22310.

Research output: Contribution to journalArticle

Shimada, N, Terasawa, T & Jokipii, JR 1997, 'Stochastic particle acceleration by a pair of slow shocks', Journal of Geophysical Research: Space Physics, vol. 102, no. A10, 97JA02032, pp. 22301-22310.
Shimada, Nobue ; Terasawa, Toshio ; Jokipii, J. Randy. / Stochastic particle acceleration by a pair of slow shocks. In: Journal of Geophysical Research: Space Physics. 1997 ; Vol. 102, No. A10. pp. 22301-22310.
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