Nonlinear oblique whistlers: Their relevance to nonthermal coupling of ions and electrons in accretion flow and supercritical quasi-perpendicular collisionless shocks

Details Nonlinear oblique whistlers: Their relevance to nonthermal coupling of ions and electrons in accretion flow and supercritical quasi-perpendicular collisionless shocks Nonlinear oblique whistlers: Their relevance to nonthermal coupling of ions and electrons in accretion flow and supercritical quasi-perpendicular collisionless shocks

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989plap.work..285c&link_type=abstract

In ESA, Proceedings of an International School and Workshop on Plasma Astrophysics, Volume 1 p 285-289 (SEE N89-24910 18-75)

Astronomy and Astrophysics

Astronomy

Black Holes (Astronomy), Electromagnetic Coupling, Mass Flow, Stellar Mass Accretion, Whistlers, Accretion Disks, Collisionless Plasmas, Ion Density (Concentration), Plasma Heating, Plasma Turbulence

Scientific paper

It is demonstrated that oblique whistlers may be effective in coupling and energizing plasma populations during accretion flow onto massive central objects such as black holes. These plasma collective modes could be excited by inverse ion-populations in perpendicular velocity space such as the ring-like and loss-cone type of distributions, or cross-field drifts induced by the gravitational and magnetic fields, reflection across high-Mach number collisionless shocks, density and/or magnetic field gradients. Nonlinear and turbulent states of these plasma collective modes can accelerate the electrons to large energies. It is suggested that the same nonlinear plasma modes may play a central role in the description of the structure of supercritical quasi-perpendicular collisionless shocks.

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