| Relativist ic Corrections to the Thermal Sunyaev-Zel'dovich Power Spectrum |
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| 作者姓名： | Hai-Ning Li
National Astronomical Observatories Chinese Academy of Sciences Beijing lhn |
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| 作者单位： | Hai-Ning Li
National Astronomical Observatories，Chinese Academy of Sciences，Beijing 100012;
lhn
Department of Astronomy，Beijing Normal University，Beijing 100875 |
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| 基金项目： | Supported by the National Natural Science Foundation of China |
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| 摘 要： | We present a quantitative estimate of the relativistic corrections to the thermal SZ power spectrum produced by the energetic electrons in massive clusters. The corrections are well within 10% for current experiments with working frequencies below v < 100 GHz, but become non-negligible at high frequencies v > 350 GHz. Moreover, the corrections appear to be slightly smaller at higher l or smaller angular scales. We conclude that there is no need to include the relativistic corrections in the theoretical study of the SZ power spectrum especially at low frequencies unless the SZ power spectrum is used for precision cosmology.
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Relativistic Corrections to the Thermal Sunyaev-Zel'dovich Power Spectrum |
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| Hai-Ning Li
National Astronomical Observatories,Chinese Academy of Sciences,Beijing ,
lhn.Relativist ic Corrections to the Thermal Sunyaev-Zel''''dovich Power Spectrum[J].Chinese Journal of Astronomy and Astrophysics,2003,3(5). |
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| Authors: | Hai-Ning Li |
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| Abstract: | We present a quantitative estimate of the relativistic corrections to the thermal SZ power spectrum produced by the energetic electrons in massive clusters. The corrections are well within 10% for current experiments with working frequencies below v < 100 GHz, but become non-negligible at high frequencies v > 350 GHz. Moreover, the corrections appear to be slightly smaller at higher l or smaller angular scales. We conclude that there is no need to include the relativistic corrections in the theoretical study of the SZ power spectrum especially at low frequencies unless the SZ power spectrum is used for precision cosmology. |
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| Keywords: | cosmic microwave background - cosmology: theory - galaxies: clusters: general |
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