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Jan2-12, 06:38 PM
P: 1,261
Quote Quote by ollo View Post
If I know the temperature of the material I'm looking at and I know which transition I want to look at how can I calculate what the observed flux (in Jansky) should be?
You need to solve the radiative transfer equation---in particular, finding the Einstein Coefficients

Quote Quote by ollo View Post
Also, what can I calculate from observed FWHM?
The width of lines tells you many things concerning the cause of Line Broadening