An Introduction to Modern Astrophysics · Problem 9.15

The Interiors of Stars — Carroll & Ostlie

Physics — Astrophysics · transfer-equation-source-function

Problem

Derive Eq. (9.35) in Example 9.4.1, which shows how the intensity of a light ray is converted from its initial intensity

I_\lambda

to the value

S_\lambda

of the source function.