Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...216..329m&link_type=abstract
Astrophysical Journal, Part 1, vol. 216, Aug. 15, 1977, p. 329-345.
Astronomy and Astrophysics
Astrophysics
23
Brightness Temperature, Compton Effect, Interstellar Masers, Line Spectra, Radiant Flux Density, Astronomical Models, Kinetics, Molecular Relaxation, Nonlinear Systems, Plasma-Particle Interactions, Radiative Transfer, Solitary Waves, Water Masers
Scientific paper
Induced (nonlinear) Compton interaction between spectrally narrow and incoherent radiation, corresponding to interstellar maser lines (OH and H2O) with a high brightness temperature approximately 10 to the 15th power K), and the surrounding rarefied plasma is considered in order to interpret the strong variability of intensity for unsaturated maser lines. The narrow amplified line of given width exhibits large-amplitude relaxation oscillations, generating at each oscillation a broad satellite at the Compton-Doppler distance on the longward side of the line, which behaves as a photon soliton moving downward on the frequency axis at constant speed and constant amplitude.
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