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- W2077235377 abstract "view Abstract Citations (11) References (15) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Radiation from Accelerated Alfven Solitons in Inhomogeneous Plasmas Lakhina, G. S. ; Buti, B. ; Tsintsadze, N. L. Abstract In a weakly inhomogeneous plasma, the large-amplitude Alfven waves propagating parallel to the ambient magnetic field are shown to evolve into accelerated Alfven solitons. Nonlinear interaction of the accelerated Alfven solitons with the Langmuir waves results in the emission of coherent radiations. Analytical expression for the power radiated per unit solid angle from a soliton is derived for two inhomogeneity profiles, namely the linear profile and the parabolic profile. For the case of uniform plasmas, the emission occurs via a decay-type process or resonant modes. In the presence of inhomogeneity, nonresonant modes provide a new channel for the emission of radiation. The power radiated per unit solid angle is computed for the parameters relevant to Comet Halley's plasma environment. For the nonresonant modes it is found to be several orders of magnitude higher than that for the case of resonant modes. Publication: The Astrophysical Journal Pub Date: April 1990 DOI: 10.1086/168577 Bibcode: 1990ApJ...352..747L Keywords: Magnetohydrodynamic Waves; Nonuniform Plasmas; Plasma Radiation; Solitary Waves; Continuity Equation; Ion Cyclotron Radiation; Wave Propagation; Astrophysics; COMETS; PLASMAS; RADIATION MECHANISMS full text sources ADS |" @default.
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- W2077235377 date "1990-04-01" @default.
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- W2077235377 title "Radiation from accelerated Alfven solitons in inhomogeneous plasmas" @default.
- W2077235377 doi "https://doi.org/10.1086/168577" @default.
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