Recent content by ollo

I have the Einstein coefficients and I know the relative population of states, but how do I use these to calculate a flux?

I've been looking at spectra from diatomic molecules. 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? Also, what can I calculate from observed FWHM? Thanks.