The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: a tomographic measurement of cosmic structure growth and expansion rate based on optimal redshift weights
Journal Article
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· Monthly Notices of the Royal Astronomical Society
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- Univ. of Portsmouth (United Kingdom); Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Chinese Academy of Sciences, Beijing (China)
- Chinese Academy of Sciences (CAS), Beijing (China)
- Max Planck Society, Garching (Germany). Max Planck Inst. for Astrophysik
- Sorbonne Univ., Paris (France); Univ. Pierre et Marie Curie, Paris (France)
- Univ. of Portsmouth (United Kingdom)
- Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Chinese Academy of Sciences, Beijing (China)
- Leibniz Inst. for Astrophysics Potsdam (AIP) (Germany); Stanford Univ., CA (United States)
- Yale Univ., New Haven, CT (United States)
- Univ. of Portsmouth (United Kingdom); The Ohio State Univ., Columbus, OH (United States)
- Univ. of St. Andrews, Scotland (United Kingdom)
- Aix-Marseille Univ., and CNRS/IN2P3, Marseille (France)
- Univ. of Wyoming, Laramie, WY (United States)
- New York Univ. (NYU), NY (United States)
- Univ. Paris-Saclay, Gif-sur-Yvette (France)
- Univ. of Portsmouth (United Kingdom); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Leibniz Inst. for Astrophysics Potsdam (AIP) (Germany); Humboldt Univ. of Berlin (Germany)
- Univ. of Utah, Salt Lake City, UT (United States)
- Ludwig Maximilian Univ., Munich (Germany); Max Planck Inst. fur Extraterrestrische Physik, Garching (Germany)
- Univ. Nacional Autonoma de Mexico (UNAM), Mexico City (Mexico)
- Sejong Univ., Seoul (Korea, Republic of)
- Univ. of Edinburgh, Scotland (United Kingdom). The Royal Observatory
- Max Planck Inst. fur Extraterrestrische Physik, Garching (Germany)
- Korea Astronmy and SPace Science Inst., Daejeon (Korea, Republic of); Univ. of Science and Technology, Daejon (Korea, Republic of)
- Pennsylvania State Univ., University Park, PA (United States)
- Chinese Academy of Sciences (CAS), Beijing (China); Tsinghua Univ., Beijing (China)
We develop a new method, which is based on the optimal redshift weighting scheme, to extract the maximal tomographic information of baryonic acoustic oscillations (BAO) and redshift space distortions (RSD) from the extended Baryon Oscillation Spectroscopic Survey (eBOSS) Data Release 14 quasar (DR14Q) survey. We validate our method using the Extended Zel’dovich mocks, and apply our pipeline to the eBOSS DR14Q sample in the redshift range of 0.8 < z < 2.2. We report a joint measurement of fσ8 and two-dimensional BAO parameters DA and H at four effective redshifts of zeff = 0.98, 1.23, 1.52, and 1.94, and provide the full data covariance matrix. Using our measurement combined with BOSS DR12, Main Galaxy Sample (MGS), and 6 degree Field Galaxy Survey (6dFGS) BAO measurements, we find that the existence of dark energy is supported by observations at a 7.4σ significance level. Combining our measurement with BOSS DR12 and Planck observations, we constrain the gravitational growth index to be γ = 0.580 ± 0.082, which is fully consistent with the prediction of general relativity. This paper is part of a set that analyses the eBOSS DR14 quasar sample.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of California, Oakland, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1543974
- Journal Information:
- Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Journal Issue: 3 Vol. 482; ISSN 0035-8711
- Publisher:
- Royal Astronomical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:1864377