Physics – Plasma Physics
Scientific paper
Mar 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999jgr...104.4669h&link_type=abstract
Journal of Geophysical Research, Volume 104, Issue A3, p. 4669-4680
Physics
Plasma Physics
11
Interplanetary Physics: Planetary Bow Shocks, Interplanetary Physics: Plasma Waves And Turbulence, Space Plasma Physics: Numerical Simulation Studies, Space Plasma Physics: Shock Waves
Scientific paper
We present results of a two-dimensional hybrid simulation of the electromagnetic proton beam instability. We show that for a case of cold and rather high density proton beam the oblique right-handed resonant modes play an important role. The interaction of these modes with the beam protons causes significant beam density fluctuations. At the nonlinear stage the oblique modes give rise to a beam filamentation. Beam filaments influence strongly the evolution of the instability. They create pulses of a strong magnetic field. These pulses share some properties of the magnetic pulsations (short, large-amplitude magnetic structures). We suppose that the oblique modes play an important role in the structure of the quasi-parallel Earth's bow shock.
Hellinger Petr
Mangeney Andre
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