A SEARCH FOR X-RAY REIONIZATION SIGNATURES FROM CROSS-CORRELATION OF WMAP AND ROSAT RASS DATA

	A SEARCH FOR X-RAY REIONIZATION SIGNATURES FROM CROSS-CORRELATION OF WMAP AND ROSAT RASS DATA
	Guo, Quan 1,2; Wu, Xiang-Ping1 ; Xu, HaiGuang 3; Gu, JunHua3
刊名	ASTROPHYSICAL JOURNAL
	2009-03-01
卷号	693 期号:1 页码:1000-1006
关键词	cosmic microwave background large-scale structure of universe X-rays: galaxies
英文摘要	We present an observational search for the possible correlation between cosmic microwave background (CMB) polarization and soft X-ray background (SXRB) based on the ROSAT All-sky Survey (RASS) archive and WMAP five-year observations. This is motivated by the fact that some of the CMB polarization may arise from the scattering of CMB photons due to the free electrons generated by X-ray heating sources in the epoch of reionization. Detection of such a correlation allows one to study the role of X-ray heating in the process of reionization. However, the cross-angular power spectrum of the CMB polarization and SXRB maps constructed from ROSAT RASS and WMAP five-year maps is consistent with no correlation. We attribute this negative detection to both the extremely weak signals and large instrumental noises. While a future search is needed with high-sensitivity instruments for both CMB polarization and soft X-ray photons, our current results can still be used as a useful constraint on the effect of X-ray heating in the epoch of reionization.
收录类别	SCI
语种	英语
WOS记录号	WOS:000263903300083
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/8344]
专题	国家天文台_星系宇宙学研究部
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Shanghai Jiao Tong Univ, Dept Phys, Shanghai 200240, Peoples R China
推荐引用方式 GB/T 7714	Guo, Quan,Wu, Xiang-Ping,Xu, HaiGuang,et al. A SEARCH FOR X-RAY REIONIZATION SIGNATURES FROM CROSS-CORRELATION OF WMAP AND ROSAT RASS DATA[J]. ASTROPHYSICAL JOURNAL,2009,693(1):1000-1006.
APA	Guo, Quan,Wu, Xiang-Ping,Xu, HaiGuang,&Gu, JunHua.(2009).A SEARCH FOR X-RAY REIONIZATION SIGNATURES FROM CROSS-CORRELATION OF WMAP AND ROSAT RASS DATA.ASTROPHYSICAL JOURNAL,693(1),1000-1006.
MLA	Guo, Quan,et al."A SEARCH FOR X-RAY REIONIZATION SIGNATURES FROM CROSS-CORRELATION OF WMAP AND ROSAT RASS DATA".ASTROPHYSICAL JOURNAL 693.1(2009):1000-1006.