https://scholars.lib.ntu.edu.tw/handle/123456789/308299
標題: | Clusters in preheating simulation and its effect on CMB spectrum | 作者: | TZI-HONG CHIUEH TAK-PONG WOO |
關鍵字: | Cosmic microwave background; Cosmology: theory; Intergalactic medium | 公開日期: | 2004 | 卷: | 19 | 期: | 13-16 | 起(迄)頁: | 1035-1038 | 來源出版物: | Modern Physics Letters A | 摘要: | We report an instantaneous heating scheme at z = 2 that can produce bound objects obeying the observed mass-temperature and luminosity-temperature relations. Such heating reduces the Sunyaev-Zeldovich (SZ) flux by a factor 3 - 2 on scale of 4 - 6 arcminutes. It exacerbates the need for the matter-fluctuation normalization as to assume an exceedingly high value (∼ 1.2), if the several-arcminute excess anisotropy detected by the CBI experiment is entirely caused by the SZ effect of inter-galactic hot gas. By contrast, we find that the several-arcminute excess detected by ACBAR can be consistent with the preheated SZ signals of σ8 = 1. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-2942618260&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/308299 |
ISSN: | 02177323 | DOI: | 10.1088/0004-637X/694/2/1619 | SDG/關鍵字: | anisotropy; conference paper; cosmological phenomena; gas; heating; luminance; mass; microwave radiation; simulation; temperature |
顯示於: | 物理學系 |
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