On the structure of azimuthally small-scale ULF oscillations of hot space plasma in curved magnetic field. Modes with continuous spectrum
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| 1Cheremnykh, OK, 2Klimushkin, DY, 2Kostarev, DV 1Space Research Institute under NAS and National Space Agency of Ukraine, Kyiv, Ukraine 2Institute of Solar-Terrestrial Physics of the Siberian Branch of the RAS, Irkutsk, Russia |
| Kinemat. fiz. nebesnyh tel (Online) 2014, 30(5):3-21 |
| Start Page: Space Physics |
| Language: Russian |
Abstract: The problem of azimuthally small-scale ULF modes’ propagation in plasma with 1D inhomogeneity and variable magnetic field lines’ curvature is analyzed. The propagation areas and the transverse structure of stable Alfven and cusp modes, as well as unstable ballooning modes, are determined. It is shown that long-living ballooning and cusp modes can exist. Our results qualitatively describe the behaviour of ULF modes with continuous spectrum in the terrestrial magnetosphere and can be used to interpret the data of spacecraft and SuperDARN radar measurements. |
| Keywords: magnetic field, plasma, ULF oscillations |
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