NAOC Open IR
The impact of tandem redundant/sky-based calibration in MWA Phase II data analysis
Zhang, Zheng1; Pober, Jonathan C.1; Li, Wenyang1; Hazelton, Bryna J.2,3; Morales, Miguel F.2; Trott, Cathryn M.4,5; Jordan, Christopher H.4,5; Joseph, Ronniy C.4,5; Beardsley, Adam6; Barry, Nichole5,7; Byrne, Ruby2; Tingay, Steven J.4,5; Chokshi, Aman5,7; Hasegawa, Kenji8; Jacobs, Daniel C.6; Lanman, Adam1; Line, Jack L. B.4,5; Lynch, Christene4,5; McKinley, Benjamin4,5; Mitchell, Daniel A.4,9; Murray, Steven4,5; Pindor, Bart5,7; Rahimi, Mahsa5,7; Takahashi, Keitaro10,11; Wayth, Randall B.4,5; Webster, Rachel L.5,7; Wilensky, Michael2; Yoshiura, Shintaro7; Zheng, Qian12
2020
Source PublicationPUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA
ISSN1323-3580
Volume37Pages:16
AbstractPrecise instrumental calibration is of crucial importance to 21-cm cosmology experiments. The Murchison Widefield Array's (MWA) Phase II compact configuration offers us opportunities for both redundant calibration and sky-based calibration algorithms; using the two in tandem is a potential approach to mitigate calibration errors caused by inaccurate sky models. The MWA Epoch of Reionization (EoR) experiment targets three patches of the sky (dubbed EoR0, EoR1, and EoR2) with deep observations. Previous work in Li et al. (2018) and (2019) studied the effect of tandem calibration on the EoR0 field and found that it yielded no significant improvement in the power spectrum (PS) over sky-based calibration alone. In this work, we apply similar techniques to the EoR1 field and find a distinct result: the improvements in the PS from tandem calibration are significant. To understand this result, we analyse both the calibration solutions themselves and the effects on the PS over three nights of EoR1 observations. We conclude that the presence of the bright radio galaxy Fornax A in EoR1 degrades the performance of sky-based calibration, which in turn enables redundant calibration to have a larger impact. These results suggest that redundant calibration can indeed mitigate some level of model incompleteness error.
Keywordinstrumentation interferometers methods data analysis cosmology observations dark ages reionisation first stars
Funding OrganizationNSF ; NSF ; Galkin Foundation ; Galkin Foundation ; Ministry of Education, Culture, Sports, and Science and Technology (MEXT) of Japan ; Ministry of Education, Culture, Sports, and Science and Technology (MEXT) of Japan ; JSPS ; JSPS ; Western Australian Government ; Western Australian Government ; Australian Government ; Australian Government ; Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) ; Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) ; ARC ; ARC ; Western Australian State government ; Western Australian State government ; Australian Research Council LIEF ; Australian Research Council LIEF ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; NSF ; NSF ; Galkin Foundation ; Galkin Foundation ; Ministry of Education, Culture, Sports, and Science and Technology (MEXT) of Japan ; Ministry of Education, Culture, Sports, and Science and Technology (MEXT) of Japan ; JSPS ; JSPS ; Western Australian Government ; Western Australian Government ; Australian Government ; Australian Government ; Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) ; Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) ; ARC ; ARC ; Western Australian State government ; Western Australian State government ; Australian Research Council LIEF ; Australian Research Council LIEF ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; NSF ; NSF ; Galkin Foundation ; Galkin Foundation ; Ministry of Education, Culture, Sports, and Science and Technology (MEXT) of Japan ; Ministry of Education, Culture, Sports, and Science and Technology (MEXT) of Japan ; JSPS ; JSPS ; Western Australian Government ; Western Australian Government ; Australian Government ; Australian Government ; Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) ; Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) ; ARC ; ARC ; Western Australian State government ; Western Australian State government ; Australian Research Council LIEF ; Australian Research Council LIEF ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; NSF ; NSF ; Galkin Foundation ; Galkin Foundation ; Ministry of Education, Culture, Sports, and Science and Technology (MEXT) of Japan ; Ministry of Education, Culture, Sports, and Science and Technology (MEXT) of Japan ; JSPS ; JSPS ; Western Australian Government ; Western Australian Government ; Australian Government ; Australian Government ; Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) ; Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) ; ARC ; ARC ; Western Australian State government ; Western Australian State government ; Australian Research Council LIEF ; Australian Research Council LIEF ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto
DOI10.1017/pasa.2020.37
WOS KeywordLINE CALIBRATION ; EPOCH ; ARRAY
Language英语
Funding ProjectNSF[1613040] ; NSF[1506024] ; NSF[1613855] ; NSF[1643011] ; Galkin Foundation ; Ministry of Education, Culture, Sports, and Science and Technology (MEXT) of Japan[15H05896] ; Ministry of Education, Culture, Sports, and Science and Technology (MEXT) of Japan[16H05999] ; Ministry of Education, Culture, Sports, and Science and Technology (MEXT) of Japan[17H01110] ; JSPS ; Western Australian Government ; Australian Government ; Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D)[CE170100013] ; ARC[FT180100321] ; Western Australian State government ; Australian Research Council LIEF[LE160100031] ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto
Funding OrganizationNSF ; NSF ; Galkin Foundation ; Galkin Foundation ; Ministry of Education, Culture, Sports, and Science and Technology (MEXT) of Japan ; Ministry of Education, Culture, Sports, and Science and Technology (MEXT) of Japan ; JSPS ; JSPS ; Western Australian Government ; Western Australian Government ; Australian Government ; Australian Government ; Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) ; Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) ; ARC ; ARC ; Western Australian State government ; Western Australian State government ; Australian Research Council LIEF ; Australian Research Council LIEF ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; NSF ; NSF ; Galkin Foundation ; Galkin Foundation ; Ministry of Education, Culture, Sports, and Science and Technology (MEXT) of Japan ; Ministry of Education, Culture, Sports, and Science and Technology (MEXT) of Japan ; JSPS ; JSPS ; Western Australian Government ; Western Australian Government ; Australian Government ; Australian Government ; Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) ; Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) ; ARC ; ARC ; Western Australian State government ; Western Australian State government ; Australian Research Council LIEF ; Australian Research Council LIEF ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; NSF ; NSF ; Galkin Foundation ; Galkin Foundation ; Ministry of Education, Culture, Sports, and Science and Technology (MEXT) of Japan ; Ministry of Education, Culture, Sports, and Science and Technology (MEXT) of Japan ; JSPS ; JSPS ; Western Australian Government ; Western Australian Government ; Australian Government ; Australian Government ; Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) ; Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) ; ARC ; ARC ; Western Australian State government ; Western Australian State government ; Australian Research Council LIEF ; Australian Research Council LIEF ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; NSF ; NSF ; Galkin Foundation ; Galkin Foundation ; Ministry of Education, Culture, Sports, and Science and Technology (MEXT) of Japan ; Ministry of Education, Culture, Sports, and Science and Technology (MEXT) of Japan ; JSPS ; JSPS ; Western Australian Government ; Western Australian Government ; Australian Government ; Australian Government ; Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) ; Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) ; ARC ; ARC ; Western Australian State government ; Western Australian State government ; Australian Research Council LIEF ; Australian Research Council LIEF ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000584476900001
PublisherCAMBRIDGE UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/81056
Collection中国科学院国家天文台
Corresponding AuthorZhang, Zheng
Affiliation1.Brown Univ, Dept Phys, Providence, RI 02912 USA
2.Univ Washington, Dept Phys, Seattle, WA 98195 USA
3.Univ Washington, eSci Inst, Seattle, WA 98195 USA
4.Curtin Univ, Int Ctr Radio Astron Res, Perth, WA 6845, Australia
5.ARC Ctr Excellence All Sky Astrophys 3 Dimens AST, Sydney, NSW, Australia
6.Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA
7.Univ Melbourne, Sch Phys, Parkville, Vic 3010, Australia
8.Nagoya Univ, Grad Sch Sci, Nagoya, Aichi, Japan
9.CSIRO Astron & Space Sci CASS, POB 76, Epping, NSW 1710, Australia
10.Kumamoto Univ, Fac Sci, 2-39-1 Kurokami, Kumamoto 8608555, Japan
11.Kumamoto Univ, Int Res Org Adv Sci & Technol, Kumamoto 8608555, Japan
12.Shanghai Astron Observ, Shanghai, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Zheng,Pober, Jonathan C.,Li, Wenyang,et al. The impact of tandem redundant/sky-based calibration in MWA Phase II data analysis[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA,2020,37:16.
APA Zhang, Zheng.,Pober, Jonathan C..,Li, Wenyang.,Hazelton, Bryna J..,Morales, Miguel F..,...&Zheng, Qian.(2020).The impact of tandem redundant/sky-based calibration in MWA Phase II data analysis.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA,37,16.
MLA Zhang, Zheng,et al."The impact of tandem redundant/sky-based calibration in MWA Phase II data analysis".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA 37(2020):16.
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