The maser effect for the 21-cm line in turbulent interstellar plasma

Details The maser effect for the 21-cm line in turbulent interstellar plasma The maser effect for the 21-cm line in turbulent interstellar plasma

Aug 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979pazh....5..345k&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 5, July 1979, p. 345-347.) Soviet Astronomy Letters, vol. 5, July-Aug. 1979, p. 184, 18

Astronomy and Astrophysics

Astronomy

Emission Spectra, Hydrogen Atoms, Interstellar Gas, Interstellar Masers, Plasma Turbulence, Population Inversion, Gyrofrequency, Lyman Spectra, Magnetic Flux, Wave Interaction

Scientific paper

The development of a population inversion with respect to 21-cm emission in hydrogen atoms situated in an interstellar plasma with gyrofrequency-type wave turbulence is examined. The interaction of atomic spins, Lyman radiation and whistler turbulence with frequencies close to the plasma electron gyrofrequency leading to a population inversion is analyzed. Maser emission at 21-cm in dense interstellar clouds is then suggested as the cause of unusually high magnetic field strengths determined from measurements of the circular polarization in the wings of the 21-cm absorption line.

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