Theory of low-scale mhd waves in the near equatorial region of the earth plasmasphere
|1Burdo, OS, 1Cheremnykh, OK, 2Verkhoglyadova, OP |
1Space Research Institute of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine, Kyiv, Ukraine
2Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
|Косм. наука технол. 2001, 7 ;(Suppl. 2):074-083|
|Мова публікації: англійська|
Study of low-scale MHD waves in the inner Earth magnetosphere was performed using the standard set of ballooning mode equations obtained naturally for finite pressure plasmas in general magnetic field geometries. Flute- and ballooning-type low-scale disturbances in the near equatorial plasma-sphere where they may have maximum growth rates were studied. The ballooning mode stability condition was obtained, the wave excitation spectrum was investigated. Corresponding dispersion equations for low-frequency wave modes were formulated and analysed. Dependencies of eigenfre-quencies and growth rates on plasma pressure and Mcllwain parameter were discussed.