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Evolution of X-ray spectra in down-Comptonization. A comparison of the extended Kompaneets equation with Monte Carlo simulation and the Ross-McCray equation
2004
Astronomy and Astrophysics
The original Kompaneets equation fails to describe down-Comptonization, which is the most important radiative transfer process in hard X-ray and γ-ray astronomy, compared with up-Comptonization. In this paper, we improve our previous derivation of the extended Kompaneets equation and present it more clearly. The new equation can be used to describe a more general Comptonization process, including up-and down-Comptonization, suitable for any case, hν kT e , hν kT e and hν ∼ kT e . The condition
doi:10.1051/0004-6361:20031765
fatcat:e7spwm6unfevjdh4gbdturo6bm