The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: measuring the evolution of the growth rate using redshift-space distortions between redshift 0.8 and 2.2

Journal Article · Thu Dec 20 00:00:00 EST 2018 · Monthly Notices of the Royal Astronomical Society

DOI:https://doi.org/10.1093/mnras/sty3395· OSTI ID:1489055

Ruggeri, Rossana ^[1]; Percival, Will J. ^[1]; Gil-Marín, Héctor  ^[2]; Beutler, Florian  ^[3]; Mueller, Eva-Maria ^[1]; Zhu, Fangzhou ^[4]; Padmanabhan, Nikhil  ^[4]; Zhao, Gong-Bo  ^[5]; Zarrouk, Pauline ^[6]; Sánchez, Ariel G. ^[7]; Bautista, Julian ^[8]; Brinkmann, Jonathan ^[9]; Brownstein, Joel R.  ^[8]; Baumgarten, Falk ^[10]; Chuang, Chia-Hsun  ^[11]; Dawson, Kyle ^[8]; Seo, Hee-Jong  ^[12]; Tojeiro, Rita  ^[13]; Zhao, Cheng ^[14]

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1. Institute of Cosmology & Gravitation, University of Portsmouth, Dennis Sciama Building, Portsmouth PO1 3FX, UK
2. Sorbonne Universites, Institut Lagrange de Paris (ILP), 98 bis Boulevard Arago, F-75014 Paris, France, Laboratoire de Physique Nucleaire et de Hautes Energies, Universit ´ e Pierre et Marie Curie, 4 Place Jussieu, F-75005 Paris, France
3. Institute of Cosmology & Gravitation, University of Portsmouth, Dennis Sciama Building, Portsmouth PO1 3FX, UK, Lawrence Berkeley National Lab, 1 Cyclotron Rd, Berkeley, CA 94720, USA
4. Dept. of Physics, Yale University, New Haven, CT 06511, USA
5. Institute of Cosmology & Gravitation, University of Portsmouth, Dennis Sciama Building, Portsmouth PO1 3FX, UK, National Astronomy Observatories, Chinese Academy of Science, Beijing 100012, P.R.China
6. IRFU,CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
7. Max-Planck-Institut für extraterrestische Physik, Postfach 1312, Giessenbachstr, D-85741 Garching, Germany
8. Department of Physics and Astronomy, University of Utah, 115 S. 1400 E., Salt Lake City, UT 84112, USA
9. Apache Point Observatory, P.O. Box 59, Sunspot, NM 88349, USA
10. Leibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, D-14482 Potsdam, Germany
11. Leibniz-Institut für Astrophysik Potsdam (AIP), An der Sternwarte 16, D-14482 Potsdam, Germany, Kavli Institute for Particle Astrophysics and Cosmology & Physics Department, Stanford University, Stanford, CA 94305, USA
12. Department of Physics and Astronomy, Ohio University, Clippinger Labs, Athens, OH 45701, USA
13. School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews KY16 9SS, UK
14. Tsinghua Center for Astrophysics and Department of Physics, Tsinghua University, Beijing 100084, China

We measure the growth rate and its evolution using the anisotropic clustering of the extended Baryon Oscillation Spectroscopic Survey (eBOSS) Data Release 14 (DR14) quasar sample, which includes 148659 quasars covering the wide redshift range of 0.8 < z < 2.2 and a sky area of 2112.90deg². To optimize measurements we deploy a redshift-dependent weighting scheme, which allows us to avoid binning and perform the data analysis consistently including the redshift evolution across the sample. We perform the analysis in Fourier space, and use the redshift evolving power spectrum multipoles to measure the redshift-space distortion parameter fσ8 and parameters controlling the anisotropic projection of the cosmological perturbations. Here, we measure fσ8(z = 1.52) = 0.43 ± 0.05 and dfσ8/dz(z = 1.52) = –0.16 ± 0.08, consistent with the expectation for a lambda cold dark matter cosmology as constrained by the Planck experiment.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
• Sponsoring Organization: USDOE
• Grant/Contract Number: AC02-05CH11231
• OSTI ID: 1489055
• Alternate ID(s): OSTI ID: 1530827
• Journal Information: Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Vol. 483 Journal Issue: 3; ISSN 0035-8711
• Publisher: Oxford University Press
• Country of Publication: United Kingdom
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
cosmology: observations
dark energy
dark matter
large-scale structure of Universe