Modified two-stream instability in the foot of high Mach number quasi-perpendicular shocks

Shuichi Matsukiyo, Manfred Scholer

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

The modified two-stream instability in the foot of supercritical quasi-perpendicular shock wave is investigated. A linear analysis shows that the instability can sufficiently grow during the shock reformation cycle for the case of a realistic ion to electron mass ratio. The wave-particle interactions of the Landau type of both the electrons and ions are essential in a finite beta plasma and lead to a reduction of the growth rate with increasing beta. The magnetic polarization in terms of wavevector is also analyzed. Additional one-dimensional full-particle electromagnetic simulations in a periodic system reveal some important nonlinear wave properties. The wave spectra indicate a lower cascade due to wave-wave interactions. The parallel phase space distribution of electrons correlates well with the wave profile of the magnetic field component perpendicular to both the ambient magnetic field and the wavevector. The nonlinearly generated waves lead to electron heating parallel to the magnetic field.

Original languageEnglish
Article number1459
JournalJournal of Geophysical Research: Space Physics
Volume108
Issue numberA12
DOIs
Publication statusPublished - Jan 1 2003

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Mach number
magnetic fields
shock
electrons
electron
magnetic field
ions
wave-wave interaction
wave property
Electrons
Magnetic fields
ion
nonlinear wave
wave spectrum
shock wave
wave-particle interactions
electron mass
growth retardation
wave interaction
Ions

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  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
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  • Atmospheric Science
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  • Space and Planetary Science
  • Palaeontology

Cite this

Modified two-stream instability in the foot of high Mach number quasi-perpendicular shocks. / Matsukiyo, Shuichi; Scholer, Manfred.

In: Journal of Geophysical Research: Space Physics, Vol. 108, No. A12, 1459, 01.01.2003.

Research output: Contribution to journalArticle

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