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Sky reconstruction from transit visibilities: PAON-4 and Tianlai dish array
Zhang, Jiao1,2,3; Ansari, Reza2; Chen, Xuelei1,3,4; Campagne, Jean-Eric2; Magneville, Christophe5; Wu, Fengquan1
2016-09-11
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume461Issue:2Pages:1950-1966
Contribution Rank1
Abstract

The spherical harmonics m-mode decomposition is a powerful sky map reconstruction method suitable for radio interferometers operating in transit mode. It can be applied to various configurations, including dish arrays and cylinders. We describe the computation of the instrument response function, the point spread function, transfer function, the noise covariance matrix and noise power spectrum. The analysis in this paper is focused on dish arrays operating in transit mode. We show that arrays with regular spacing have more pronounced side lobes as well as structures in their noise power spectrum, compared to arrays with irregular spacing, specially in the north-south direction. A good knowledge of the noise power spectrum C-noise(l) is essential for intensity mapping experiments as non-uniform C-noise(l) is a potential problem for the measurement of the H I power spectrum. Different configurations have been studied to optimize the PAON-4 and Tianlai dish array layouts. We present their expected performance and their sensitivities to the 21-cm emission of the Milky Way and local extragalactic H I clumps.

SubtypeArticle
KeywordMethods: Data Analysis Methods: Numerical Techniques: Interferometric Cosmology: Observations Large-scale Structure Of Universe Radio Lines: Galaxies
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationMoST(2012AA121701) ; CAS Repair and Procurement grant ; PNCG ; Observatoire de Paris ; Irfu/CEA ; LAL/CNRS ; China Scholarship Council ; CAS strategic Priority Research Programme(XDB09020301) ; NSFC(11373030 ; 11473044) ; MoST(2012AA121701) ; CAS Repair and Procurement grant ; PNCG ; Observatoire de Paris ; Irfu/CEA ; LAL/CNRS ; China Scholarship Council ; CAS strategic Priority Research Programme(XDB09020301) ; NSFC(11373030 ; 11473044)
DOI10.1093/mnras/stw1458
WOS KeywordLARGE-SCALE STRUCTURES ; I MASS FUNCTION ; RADIO INTERFEROMETRY ; MAPPING EXPERIMENTS ; NONCOPLANAR ARRAYS ; DATA RELEASE ; BASE-LINES ; WIDE-FIELD ; TO 0.8 ; COSMOLOGY
Indexed BySCI
Language英语
Funding OrganizationMoST(2012AA121701) ; CAS Repair and Procurement grant ; PNCG ; Observatoire de Paris ; Irfu/CEA ; LAL/CNRS ; China Scholarship Council ; CAS strategic Priority Research Programme(XDB09020301) ; NSFC(11373030 ; 11473044) ; MoST(2012AA121701) ; CAS Repair and Procurement grant ; PNCG ; Observatoire de Paris ; Irfu/CEA ; LAL/CNRS ; China Scholarship Council ; CAS strategic Priority Research Programme(XDB09020301) ; NSFC(11373030 ; 11473044)
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000383273600061
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.bao.ac.cn/handle/114a11/5263
Collection星系宇宙学研究部
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Key Lab Computat Astrophys, Beijing 100012, Peoples R China
2.Univ Paris Saclay, Univ Paris 11, CNRS, LAL,IN2P3, Orsay, France
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
5.CEA, DSM, IRFU, Ctr Etud Saclay, F-91191 Gif Sur Yvette, France
Recommended Citation
GB/T 7714
Zhang, Jiao,Ansari, Reza,Chen, Xuelei,et al. Sky reconstruction from transit visibilities: PAON-4 and Tianlai dish array[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,461(2):1950-1966.
APA Zhang, Jiao,Ansari, Reza,Chen, Xuelei,Campagne, Jean-Eric,Magneville, Christophe,&Wu, Fengquan.(2016).Sky reconstruction from transit visibilities: PAON-4 and Tianlai dish array.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,461(2),1950-1966.
MLA Zhang, Jiao,et al."Sky reconstruction from transit visibilities: PAON-4 and Tianlai dish array".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 461.2(2016):1950-1966.
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