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Fig. 1
The probability of escape via line broadening, Pγ (per scattering), for a photon with frequency ω = ωB residing at the optical depth τ. Solid line is for γ/(ωBβT) = 10-3, dashed line is for γ/(ωBβT) = 10-4, and dot-dashed line is for γ/(ωBβT) = 10-5.
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