Exoplanet Atmospheres by Sara Seager

Author:Sara Seager [Seager, Sara]
Language: eng
Format: epub
ISBN: 978-1-4008-3530-0
Publisher: Princeton University Press
Published: 2010-02-02T16:00:00+00:00

From our previous discussion of the thermal compoment of the source function in LTE (Section 5.4) we have

where B is black body radiation, which depends only on temperature (through τν) and frequency. Because the scattering coefficient σs is zero, the extincition coefficient is due to absorption only, that is, κ = α. For thermal emission only in an LTE atmosphere the radiative transfer equation (equation [6.1]) is

We have seen the formal solution to the radiative transfer equation already, equation [5.44]. Using S = B, equation [5.44] becomes

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