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## Full-Text Articles in Physics

On The Theory Of Astronomical Masers In Three Dimensions, Moshe Elitzur

#### On The Theory Of Astronomical Masers In Three Dimensions, Moshe Elitzur

*Physics and Astronomy Faculty Publications*

In the standard theory of three-dimensional astronomical masers, the radiation field is described as if the source were comprised of a collection of linear masers. To leading order, the standard theory is shown to provide the correct description of three-dimensional masers and its results remain intact, but only within a frequency core whose half-width is χ_{s}Δν_{D}, where Δν_{D }is the Doppler width and χ_{s} is a dimensionless parameter. For any given geometry, χ_{s} is ~1*θ*_{sat}, where *θ*_{sat} is the beaming angle of a maser with that geometry that has just saturated ...