Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...274..195w&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 274, Nov. 1, 1983, p. 195-209.
Astronomy and Astrophysics
Astrophysics
24
Interstellar Masers, Linear Polarization, Maser Outputs, Polarized Radiation, Disks (Shapes), Radiative Transfer, Size (Dimensions), Spheres, Spherical Shells
Scientific paper
The intensity of maser radiation emitted from idealized two- and three-dimensional masers (spheres, spherical shells, and thin disks) is obtained by integrating the transfer equations for polarized maser radiation which have been deduced in a previous paper. Treating the magnetic substates separately is necessary in saturated masers when the cross relaxation rate between the substates is slower than the stimulated emission rate due to the maser. In the absence of external radiation, the solutions depend on only the dimensionless radii of the region and a dimensionless spontaneous emission rate. A third parameter is introduced if an isotropic, external radiation field is present. The results are compared with observed properties of OH, H2O and SiO masers with particular emphasis on linear polarization measurements.
Watson William D.
Western L. R.
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