Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984afz....20..599d&link_type=abstract
(Astrofizika, vol. 20, May-June 1984, p. 599-605) Astrophysics (ISSN 0571-7132), vol. 20, no. 3, Nov. 1984, p. 335-339. Translat
Astronomy and Astrophysics
Astrophysics
1
Cosmic Plasma, Magnetoacoustic Waves, Nonuniform Magnetic Fields, Solitary Waves, Wave Scattering, Galactic Nuclei, Perturbation Theory, Propagation Velocity, Stellar Atmospheres, Wave Propagation
Scientific paper
A perturbation theory has been developed for a nonlinear equation of the Boussinesq type. In a low-temperature magnetoactive plasma the solitary magnetic sound wave travelling in the direction transverse to that of the external magnetic field is shown to generate pulses of the magnetic field of the same shape as a soliton when it crosses the jump of the magnetic field. The radiation propagates in both forward and backward directions relative to the direction of solitary wave propagation at Alfvén velocity. When a solitary wave propagates in a nonhomogeneous magnetic field low-frequency radiation is shown to take place which is considered as the transition scattering of the magnetic sound solitary wave.
Dzhangirian R. G.
Kostanian F. A.
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