| Issue |
A&A
Volume 417, Number 3, April III 2004
|
|
|---|---|---|
| Page(s) | 827 - 832 | |
| Section | Cosmology (including clusters of galaxies) | |
| DOI | https://doi.org/10.1051/0004-6361:20034236 | |
| Published online | 26 March 2004 | |
Relativistic corrections to the Sunyaev-Zeldovich effect for extremely hot clusters of galaxies*
1
Department of Physics, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan
2
Josai Junior College for Women, 1-1 Keyakidai, Sakado-shi, Saitama 350-0290, Japan e-mail: snozawa@josai.ac.jp
Corresponding author: N. Itoh, n_itoh@sophia.ac.jp
Received:
28
August
2003
Accepted:
17
November
2003
We present an accurate numerical table for the relativistic corrections to the thermal Sunyaev-Zeldovich effect for clusters of galaxies. The numerical results for the relativistic corrections have been obtained by numerical integration of the collision term of the Boltzmann equation. The numerical table is provided for the ranges 
and 
, where 
, 
, Te is the electron temperature, ω is the angular frequency of the photon and T0 is the temperature of the cosmic microwave background radiation. We also present an accurate analytic fitting formula that reproduces the numerical results with high precision.
Key words: cosmology: cosmic microwave background / cosmology: theory / galaxies: clusters: general / radiation mechanisms: thermal / relativity
© ESO, 2004
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