NAOC Open IR  > 空间科学研究部
REES-SCIAMA EFFECT AND IMPACT OF FOREGROUND STRUCTURES ON GALAXY REDSHIFTS
Zhan, Hu
2011-10-10
Source PublicationASTROPHYSICAL JOURNAL
Volume740Issue:1
AbstractWe estimate the Rees-Sciama (RS) effect of super structures on the cosmic microwave background (CMB) temperature fluctuations and identify a related effect on galaxy redshifts. By numerically solving the geodesic equation, we find that both superclusters and supervoids can decrease the temperature of the CMB by several micro Kelvin in the central region and increase the temperature slightly in the surrounding area due to the RS effect. The two components of the RS effect, redshift and gravitational time delay, largely cancel each other, leaving an equivalent but much smaller effect on the CMB photons that started out at the same time from the distorted last scattering surface. For galaxies, the time delay effect is separable from the redshift effect, and the slight change to the redshift induced by super structures can be at the percent level of large-scale rms bulk velocities, which might only be detected statistically. On much smaller scales, a tiny redshift difference between two images of a strongly lensed source should exist in general, which is related to the Hubble expansion rate at the source redshift. However, as Loeb pointed out, observational issues and the proper motion of the structure would make such a measurement impossible.
KeywordCosmic Background Radiation Cosmology: Theory Galaxies: Distances And Redshifts Large-scale Structure Of Universe
DOI10.1088/0004-637X/740/1/26
Indexed BySCI
Language英语
WOS IDWOS:000295256500026
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/7995
Collection空间科学研究部
AffiliationChinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Zhan, Hu. REES-SCIAMA EFFECT AND IMPACT OF FOREGROUND STRUCTURES ON GALAXY REDSHIFTS[J]. ASTROPHYSICAL JOURNAL,2011,740(1).
APA Zhan, Hu.(2011).REES-SCIAMA EFFECT AND IMPACT OF FOREGROUND STRUCTURES ON GALAXY REDSHIFTS.ASTROPHYSICAL JOURNAL,740(1).
MLA Zhan, Hu."REES-SCIAMA EFFECT AND IMPACT OF FOREGROUND STRUCTURES ON GALAXY REDSHIFTS".ASTROPHYSICAL JOURNAL 740.1(2011).
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhan, Hu]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhan, Hu]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhan, Hu]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.