The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: measuring the anisotropic baryon acoustic oscillations with redshift weights

doi:10.1093/mnras/sty1955

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	The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: measuring the anisotropic baryon acoustic oscillations with redshift weights
	Zhu, Fangzhou 2; Padmanabhan, Nikhil 2; Ross, Ashley J.3; White, Martin 1; Percival, Will J.4; Ruggeri, Rossana 4; Zhao, Gong-bo 4,5; Wang, Dandan 5; Mueller, Eva-Maria 4; Burtin, Etienne 7
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2018-10-01
卷号	480 期号:1 页码:1096-1105
关键词	dark energy distance scale cosmology: observations
ISSN号	0035-8711
DOI	10.1093/mnras/sty1955
英文摘要	We present an anisotropic analysis of baryon acoustic oscillation (BAO) signal from the Sloan Digital Sky Survey IV extended Baryon Oscillation Spectroscopic Survey Data Release 14 quasar sample. The sample consists of 147 000 quasars distributed over a redshift range of 0.8 < z < 2.2. We apply the redshift weights technique to the clustering of quasars in this sample and achieve a 4.6 per cent measurement of the angular distance measurement D-M at z = 2.2 and Hubble parameter H at z = 0.8. We parametrize the distance-redshift relation, relative to a fiducial model, as a Taylor series. The coefficients of this expansion are used to reconstruct the distance-redshift relation and obtain distance and Hubble parameter measurements at all redshifts within the redshift range of the sample. Reporting the result at two characteristic redshifts, we determine D-M(z = 1) = 3405 +/- 305 (r(d)/r(d,fid)) Mpc, H(z = 1) = 120.7 +/- 7.3 (r(d,fid)/r(d)) km s(-1) Mpc(-1) and D-M(z= 2)= 5325 +/- 249 (r(d)/r(d,fid)) Mpc, H(z = 2) = 189.9 +/- 32.9 (r(d,fid)/r(d)) km s(-1) Mpc(-1). These measurements are highly correlated. We assess the outlook of BAO analysis from the final quasar sample by testing the method on a set of mocks that mimic the noise level in the final sample. We demonstrate on these mocks that redshift weighting shrinks the measurement error by over 25 per cent on average. We conclude redshift weighting can bring us closer to the cosmological goal of the final quasar sample.
资助项目	Office of Science of the U.S. Department of Energy[DE-AC02-05CH11231]
WOS关键词	DIGITAL SKY SURVEY ; POWER-SPECTRUM ANALYSIS ; LUMINOUS RED GALAXIES ; DATA RELEASE ; DISTANCE MEASUREMENTS ; SCALE ; FLUCTUATIONS ; MATTER ; RECONSTRUCTION ; RADIATION
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000442567900074
资助机构	Office of Science of the U.S. Department of Energy ; Office of Science of the U.S. Department of Energy ; Office of Science of the U.S. Department of Energy ; Office of Science of the U.S. Department of Energy ; Office of Science of the U.S. Department of Energy ; Office of Science of the U.S. Department of Energy ; Office of Science of the U.S. Department of Energy ; Office of Science of the U.S. Department of Energy
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/22506]
专题	中国科学院国家天文台
通讯作者	Zhu, Fangzhou
作者单位	1.Univ Calif Berkeley, Dept Phys & Astron, Berkeley, CA 94720 USA 2.Yale Univ, Dept Phys, New Haven, CT 06511 USA 3.Ohio State Univ, Dept Phys, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA 4.Univ Portsmouth, Inst Cosmol, Gravitat, Dennis Sciama Bldg, Portsmouth PO1 3FX, Hants, England 5.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 6.Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA 7.Univ Paris Scalay, CFA, IRFU, F-91191 Gif Sur Yvette, France 8.Sorbonne Univ, ILP, 98 Bis Blvd Arago, F-75014 Paris, France 9.Univ Paris 06, Lab Phys Nucl & Hautes Energies, 4 Pl Jussieu, F-75005 Paris, France 10.Univ Utah, Dept Phys & Astron, 115 S 1400 E, Salt Lake City, UT 84112 USA
推荐引用方式 GB/T 7714	Zhu, Fangzhou,Padmanabhan, Nikhil,Ross, Ashley J.,et al. The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: measuring the anisotropic baryon acoustic oscillations with redshift weights[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,480(1):1096-1105.
APA	Zhu, Fangzhou.,Padmanabhan, Nikhil.,Ross, Ashley J..,White, Martin.,Percival, Will J..,...&Wang, Yuting.(2018).The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: measuring the anisotropic baryon acoustic oscillations with redshift weights.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,480(1),1096-1105.
MLA	Zhu, Fangzhou,et al."The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: measuring the anisotropic baryon acoustic oscillations with redshift weights".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 480.1(2018):1096-1105.