### Schuster-Schwarzschild Model

(approximation of a star's internal EMR's divergence from isotropic)

The **Schuster-Schwarzschild Model** is an approximation of Electromagnetic Radiation
Intensity as a function of direction, i.e., a description of
how intense the light is when viewed in different directions,
for example, within an Atmosphere. It is a simplification
of reality that makes calculations of Radiative Transfer
and Absorption Lines tractable.

It is an example of a Two-stream Approximation which model EMR
intensity differences in terms of upward versus downward.
In this model, all directions below horizontal have a
single constant intensity and all those above horizontal have
another.

(*physics,EMR,stars,radiative transfer*)
http://www.thermopedia.com/content/128

http://www.bartol.udel.edu/~owocki/phys633/Phys633-notes1.pdf

http://www.astro.wisc.edu/~townsend/resource/teaching/astro-310-F08/17-line-profiles-2.pdf

http://ads.harvard.edu/books/1989fsa..book/AbookC13.pdf

http://adsabs.harvard.edu/full/1954ApJ...119...51W

**Referenced by:**

Two-stream Approximation

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