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Answer to Question #55059 in Astronomy | Astrophysics for Lia
Question #55059
Since the optical depth for free-free absorption is proportional to v−2.1 while T is independent
of frequency, there must be some frequency above which Thomson scattering in the ISM reduces the observed flux density of an extragalactic point source more than free-free absorption does. Estimate that frequency.
of frequency, there must be some frequency above which Thomson scattering in the ISM reduces the observed flux density of an extragalactic point source more than free-free absorption does. Estimate that frequency.
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