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A SEARCH FOR X-RAY REIONIZATION SIGNATURES FROM CROSS-CORRELATION OF WMAP AND ROSAT RASS DATA
Guo, Quan1,2; Wu, Xiang-Ping1; Xu, HaiGuang3; Gu, JunHua3
2009-03-01
Source PublicationASTROPHYSICAL JOURNAL
Volume693Issue:1Pages:1000-1006
AbstractWe 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.
KeywordCosmic Microwave Background Large-scale Structure Of Universe X-rays: Galaxies
DOI10.1088/0004-637X/693/1/1000
Indexed BySCI
Language英语
WOS IDWOS:000263903300083
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8344
Collection星系宇宙学研究部
Affiliation1.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
Recommended Citation
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.
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