Acceleration in the earth's auroral magnetosphere below 1 R/E/

Details Acceleration in the earth's auroral magnetosphere below 1 R/E/ Acceleration in the earth's auroral magnetosphere below 1 R/E/

Nov 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979aipc...56..199h&link_type=abstract

In: Particle acceleration mechanisms in astrophysics; Proceedings of the Workshop, La Jolla, Calif., January 3-5, 1979. (A80-532

Astronomy and Astrophysics

Astrophysics

1

Atmospheric Electricity, Auroral Zones, Ionospheric Disturbances, Magnetospheric Instability, Particle Acceleration, Electrostatic Waves, Ion Cyclotron Radiation, Pitch (Inclination)

Scientific paper

Particle acceleration in the auroral magnetosphere is treated as a combination of d.c. electric field acceleration and wave heating in order to explain observed oblique pitch angle distributions of ions. Coherent electrostatic ion cyclotron waves which have been observed in the acceleration region saturate by ion trapping and thereby heat ions from the initial ionospheric temperatures of less than 1 eV to keV in perpendicular energy. Some of this is converted to parallel energy by the dipole mirror force and mixed with parallel acceleration in d.c. electric fields to produce the observed upstreaming conical pitch distributions of ions.

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