NAOC Open IR
Deep multiredshift limits on Epoch of Reionization 21 cm power spectra from four seasons of Murchison Widefield Array observations
Trott, Cathryn M.1,2; Jordan, C. H.1,2; Midgley, S.3; Barry, N.2,4; Greig, B.4; Pindor, B.2,4; Cook, J. H.1; Sleap, G.5; Tingay, S. J.1; Ung, D.1; Hancock, P.1; Williams, A.5; Bowman, J.6; Byrne, R.7; Chokshi, A.2,4; Hazelton, B. J.7,8; Hasegawa, K.9; Jacobs, D.6; Joseph, R. C.1,2; Li, W.10; Line, J. L. B.1,2; Lynch, C.1,2; McKinley, B.1,2; Mitchell, D. A.11; Morales, M. F.2,7; Ouchi, M.12,13,14; Pober, J. C.15; Rahimi, M.2,4; Takahashi, K.16,17; Wayth, R. B.1,2; Webster, R. L.2,4; Wilensky, M.7; Wyithe, J. S. B.2,4; Yoshiura, S.2,4; Zhang, Z.15; Zheng, Q.10
2020-04-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume493Issue:4Pages:4711-4727
AbstractWe compute the spherically averaged power spectrum from four seasons of data obtained for the Epoch of Reionization (EoR) project observed with the Murchison Widefield Array (MWA). We measure the EoR power spectrum over k = 0.07-3.0 h Mpc(-1) at redshifts z = 6.5-8.7. The largest aggregation of 110 h on EoR0 high band (3340 observations), yields a lowest measurement of (43 mK)(2) = 1.8 x 10(3) mK(2) at k = 0.14 h Mpc(-1) and z = 6.5 (2 sigma thermal noise plus sample variance). Using the Real-Time System to calibrate and the CHIPS pipeline to estimate power spectra, we select the best observations from the central five pointings within the 2013-2016 observing seasons, observing three independent fields and in two frequency bands. This yields 13 591 2-min snapshots (453 h), based on a quality assurance metric that measures ionospheric activity. We perform another cut to remove poorly calibrated data, based on power in the foreground-dominated and EoR-dominated regions of the two-dimensional power spectrum, reducing the set to 12 569 observations (419 h). These data are processed in groups of 20 observations, to retain the capacity to identify poor data, and used to analyse the evolution and structure of the data over field, frequency, and data quality. We subsequently choose the cleanest 8935 observations (298 h of data) to form integrated power spectra over the different fields, pointings, and redshift ranges.
Keywordinstrumentation: interferometers methods: statistical
Funding OrganizationAustralian 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 Future Fellowship ; ARC Future Fellowship ; Western Australian State government ; Western Australian State government ; JSPS KAKENHI ; JSPS KAKENHI ; JSPS ; JSPS ; Australian Research Council LIEF grant ; Australian Research Council LIEF grant ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Australian Government (NCRIS) ; Australian Government (NCRIS) ; 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 Future Fellowship ; ARC Future Fellowship ; Western Australian State government ; Western Australian State government ; JSPS KAKENHI ; JSPS KAKENHI ; JSPS ; JSPS ; Australian Research Council LIEF grant ; Australian Research Council LIEF grant ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Australian Government (NCRIS) ; Australian Government (NCRIS) ; 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 Future Fellowship ; ARC Future Fellowship ; Western Australian State government ; Western Australian State government ; JSPS KAKENHI ; JSPS KAKENHI ; JSPS ; JSPS ; Australian Research Council LIEF grant ; Australian Research Council LIEF grant ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Australian Government (NCRIS) ; Australian Government (NCRIS) ; 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 Future Fellowship ; ARC Future Fellowship ; Western Australian State government ; Western Australian State government ; JSPS KAKENHI ; JSPS KAKENHI ; JSPS ; JSPS ; Australian Research Council LIEF grant ; Australian Research Council LIEF grant ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Australian Government (NCRIS) ; Australian Government (NCRIS) ; Western Australian Government ; Western Australian Government ; Australian Government ; Australian Government
DOI10.1093/mnras/staa414
WOS KeywordBASE-LINE CALIBRATION ; REDSHIFT ; COSMOLOGY
Language英语
Funding ProjectAustralian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D)[CE170100013] ; ARC Future Fellowship[FT180100321] ; Western Australian State government ; JSPS KAKENHI[JP15H05896] ; JSPS KAKENHI[JP16H05999] ; JSPS KAKENHI[JP17H01110] ; JSPS ; Australian Research Council LIEF grant[LE160100031] ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Australian Government (NCRIS) ; Western Australian Government ; Australian Government
Funding OrganizationAustralian 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 Future Fellowship ; ARC Future Fellowship ; Western Australian State government ; Western Australian State government ; JSPS KAKENHI ; JSPS KAKENHI ; JSPS ; JSPS ; Australian Research Council LIEF grant ; Australian Research Council LIEF grant ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Australian Government (NCRIS) ; Australian Government (NCRIS) ; 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 Future Fellowship ; ARC Future Fellowship ; Western Australian State government ; Western Australian State government ; JSPS KAKENHI ; JSPS KAKENHI ; JSPS ; JSPS ; Australian Research Council LIEF grant ; Australian Research Council LIEF grant ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Australian Government (NCRIS) ; Australian Government (NCRIS) ; 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 Future Fellowship ; ARC Future Fellowship ; Western Australian State government ; Western Australian State government ; JSPS KAKENHI ; JSPS KAKENHI ; JSPS ; JSPS ; Australian Research Council LIEF grant ; Australian Research Council LIEF grant ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Australian Government (NCRIS) ; Australian Government (NCRIS) ; 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 Future Fellowship ; ARC Future Fellowship ; Western Australian State government ; Western Australian State government ; JSPS KAKENHI ; JSPS KAKENHI ; JSPS ; JSPS ; Australian Research Council LIEF grant ; Australian Research Council LIEF grant ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Dunlap Institute for Astronomy and Astrophysics at the University of Toronto ; Australian Government (NCRIS) ; Australian Government (NCRIS) ; Western Australian Government ; Western Australian Government ; Australian Government ; Australian Government
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000539094400010
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/83052
Collection中国科学院国家天文台
Corresponding AuthorTrott, Cathryn M.
Affiliation1.Curtin Univ, Int Ctr Radio Astron Res ICRAR, Bentley, WA, Australia
2.ARC Ctr Excellence All Sky Astrophys 3 Dimens AST, Bentley, WA, Australia
3.DownUnder GeoSolut Pty Ltd, Perth, Australia
4.Univ Melbourne, Sch Phys, Parkville, Vic 3010, Australia
5.Curtin Inst Radio Astron, GPO Box U1987, Perth, WA 6845, Australia
6.Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ USA
7.Univ Washington, Dept Phys, Seattle, WA 98195 USA
8.Univ Washington, eSci Inst, Seattle, WA 98195 USA
9.Nagoya Univ, Grad Sch Sci, Nagoya, Aichi, Japan
10.Shanghai Astron Observ, Shanghai, Peoples R China
11.CSIRO Astron & Space Sci, Australia Telescope Natl Facil, POB 76, Epping, NSW 1710, Australia
12.Natl Astron Observ Japan, Div Sci, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan
13.Univ Tokyo, Inst Cosm Ray Res, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778582, Japan
14.Univ Tokyo, Kavli Inst Phys & Math Universe Kavli IPMU, WPI, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778583, Japan
15.Brown Univ, Dept Phys, Providence, RI 02912 USA
16.Kumamoto Univ, Fac Adv Sci & Technol, Kumamoto, Japan
17.Kumamoto Univ, Int Res Org Adv Sci & Technol, Kumamoto, Japan
Recommended Citation
GB/T 7714
Trott, Cathryn M.,Jordan, C. H.,Midgley, S.,et al. Deep multiredshift limits on Epoch of Reionization 21 cm power spectra from four seasons of Murchison Widefield Array observations[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2020,493(4):4711-4727.
APA Trott, Cathryn M..,Jordan, C. H..,Midgley, S..,Barry, N..,Greig, B..,...&Zheng, Q..(2020).Deep multiredshift limits on Epoch of Reionization 21 cm power spectra from four seasons of Murchison Widefield Array observations.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,493(4),4711-4727.
MLA Trott, Cathryn M.,et al."Deep multiredshift limits on Epoch of Reionization 21 cm power spectra from four seasons of Murchison Widefield Array observations".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 493.4(2020):4711-4727.
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