The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 LRG sample: structure growth rate measurement from the anisotropic LRG correlation function in the redshift range 0.6 < z < 1.0
- Instituto de Física, Universidad Nacional Autónoma de México, Apdo. Postal 20-364 Ciudad de México, Mexico, Instituto de Astronomía, Universidad Nacional Autónoma de México, Apdo. Postal 70-264 Ciudad de México, Mexico, Institute for Computational Cosmology, Department of Physics, University of Durham, South Road, Durham DH1 3LE, UK
- Instituto de Física, Universidad Nacional Autónoma de México, Apdo. Postal 20-364 Ciudad de México, Mexico
- Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Av. Universidad s/n, 62210 Cuernavaca, Mor., Mexico
- Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ , UK
- Institut de Ciencies del Cosmos, Universitat de Barcelona ICCUB, Barcelona, E-08028, Spain
- Aix Marseille Universite, CNRS, LAM, Laboratoire d’Astrophysique de Marseille, Marseille, F-13013, France
- Center for Cosmology and AstroParticle Physics, The Ohio State University, Columbus, OH 43210, USA
- Department of Astronomy and Astrophysics, The Pennsylvania State University, University Park, PA 16802, USA, Institute for Gravitation and the Cosmos, The Pennsylvania State University, University Park, PA 16802, USA
- New York University, Center for Cosmology and Particle Physics, Department of Physics, 726 Broadway, Room 1005, New York, NY 10003, USA
- National Astronomy Observatories, Chinese Academy of Science, Beijing 100101, P.R. China
- IPAC, California Institute of Technology, MC 100-22, 1200 E California Boulevard, Pasadena, CA 91125, USA
- Department of Physics and Astronomy, Sejong University, Seoul 143-747, Korea
- National Astronomical Observatories of China, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, P.R. China, University of Chinese Academy of Sciences, Beijing 100049, P.R. China
- Instituto de Astronomía, Universidad Nacional Autónoma de México, Apdo. Postal 70-264 Ciudad de México, Mexico
ABSTRACT We analyse the anisotropic clustering of the Sloan Digital Sky Survey-IV Extended Baryon Oscillation Spectroscopic Survey (eBOSS) Luminous Red Galaxy Data Release 14 (DR14) sample combined with Baryon Oscillation Spectroscopic Survey (BOSS) CMASS sample of galaxies in the redshift range 0.6 < z < 1.0, which consists of 80 118 galaxies from eBOSS and 46 439 galaxies from the BOSS-CMASS sample. The eBOSS-CMASS Luminous Red Galaxy sample has a sky coverage of 1844 deg2, with an effective volume of 0.9 Gpc3. The analysis was made in configuration space using a Legendre multipole expansion. The Redshift Space Distortion signal is modelled as a combination of the Convolution Lagrangian Perturbation Model and the Gaussian Streaming Model. We constrain the logarithmic growth of structure times the amplitude of dark matter density fluctuations, f(zeff)σ8(zeff) = 0.454 ± 0.134, and the Alcock-Paczynski dilation scales which constraints the angular diameter distance $$D_A(z_{\mathrm{ eff}})=1466.5 \pm 133.2 (r_s/r_s^{\rm fid})$$ and $$H(z_{\rm eff})=105.8 \pm 15.7 (r_s^{\rm fid}/r_s) \mathrm{km\, s^{-1}\, Mpc^{-1}}$$, where rs is the sound horizon at the end of the baryon drag epoch and $$r_s^{\rm fid}$$ is its value in the fiducial cosmology at an effective redshift zeff = 0.72. These results are in full agreement with the current Λ-Cold Dark Matter (Λ-CDM) cosmological model inferred from Planck measurements. This study is the first eBOSS LRG full-shape analysis i.e. including Redshift Space Distortions simultaneously with the Alcock-Paczynski effect and the Baryon Acoustic Oscillation scale.
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1595850
- Journal Information:
- Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Vol. 492 Journal Issue: 3; ISSN 0035-8711
- Publisher:
- Oxford University PressCopyright Statement
- Country of Publication:
- United Kingdom
- Language:
- English
Web of Science
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