Structure of wave MHD fields and localization of a source of magnetic pulsations in the magnetosphere

Details Structure of wave MHD fields and localization of a source of magnetic pulsations in the magnetosphere Structure of wave MHD fields and localization of a source of magnetic pulsations in the magnetosphere

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ge%26ae..25..608k&link_type=abstract

Geomagnetizm i Aeronomiia (ISSN 0016-7940), vol. 25, July-Aug. 1985, p. 608-612. In Russian.

Computer Science

Geomagnetic Micropulsations, Geomagnetism, Magnetohydrodynamic Waves, Magnetospheric Instability, Space Plasmas, Cauchy Problem, Linear Equations, Magnetic Variations, Magnetoacoustic Waves, Plasma Oscillations, Wave Equations

Scientific paper

An exact solution of the Cauchy problem for equations of MHD waves in a homogeneous plasma in the case of sources of finite extent is obtained and analyzed. It is shown that the perpendicular and longitudinal components of a magnetoacoustic wave have different amplitude distributions with respect to the wave front: isotropic for the longitudinal component and substantially anisotropic for the perpendicular component. In the latter case, the direction identified coincides with the external magnetic field.

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