Spectral distortion of cosmic background radiation by scattering on hot electrons. Exact calculations

Details Spectral distortion of cosmic background radiation by scattering on hot electrons. Exact calculations Spectral distortion of cosmic background radiation by scattering on hot electrons. Exact calculations

2000-10-20

arxiv.org/abs/astro-ph/0010412v2

Astrophys.J. 554 (2001) 74-84

Astronomy and Astrophysics

Astrophysics

18 pages, 7 figures, to be published in ApJ

Scientific paper

10.1086/321381

The spectral distortion of the cosmic background radiation produced by the inverse Compton scattering on hot electrons in clusters of galaxies (thermal Sunyaev-Zeldovich effect) is calculated for arbitrary optical depth and electron temperature. The distortion is found by a numerical solution of the exact Boltzmann equation for the photon distribution function. In the limit of small optical depth and low electron temperature our results confirm the previous analyses. In the opposite limits, our method is the only one that permits to make accurate calculations.

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