High-. beta. theory of low-frequency magnetic pulsations

Journal Article · Tue Mar 01 00:00:00 EST 1983 · J. Geophys. Res.; (United States)

DOI:https://doi.org/10.1029/JA088iA03p02065· OSTI ID:6050862

Migliuolo, S

The theory of low-frequency (compared to ion cyclotron) arbitrary-..beta.. modes is developed for the following system: a two-component (hot and cold) inhomogeneous plasma, and a straight inhomogeneous magnetic field. This system is taken to model the magnetosphere, near the geomagnetic equator. The stability properties of three modes are presented in detail: the drift-compressional mode (driven by pressure gradients) the firehose mode (driven by T/sub parallel/>T/sub perpendicular/), and the drift mirror mode (driven by T/sub perpendicular/>T/sub parallel/). Comparisons to earlier models and to one observed event are also presented.

• Research Organization: High Altitude Observatory, National Center for Atmospheric Research, Boulder, Colorado 80307
• OSTI ID: 6050862
• Journal Information: J. Geophys. Res.; (United States), Vol. 88:A3
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
MAGNETOSPHERE
PULSATIONS
DRIFT INSTABILITY
GEOMAGNETIC EQUATOR
HIGH-BETA PLASMA
HOSE INSTABILITY
HYDROMAGNETIC WAVES
INHOMOGENEOUS PLASMA
TRAPPED-PARTICLE INSTABILITY
EARTH ATMOSPHERE
INSTABILITY
PLASMA
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
PLASMA MICROINSTABILITIES
640203* - Atmospheric Physics- Magnetospheric Phenomena- (-1987)