The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: first measurement of baryon acoustic oscillations between redshift 0.8 and 2.2
- Leibniz Inst. for Astrophysics (AIP), Potsdam (Germany)
- Leibniz Inst. for Astrophysics (AIP), Potsdam (Germany); Humboldt Univ. of Berlin (Germany). Inst. of Physics
- Univ. of Utah, Salt Lake City, UT (United States). Dept. of Physics and Astronomy
- Univ. of Portsmouth (United Kingdom). Inst. of Cosmology and Gravitation
- Apache Point Observatory and New Mexico State Univ., Sunspot, NM (United States); Moscow State Univ., Moscow (Russian Federation). Sternberg Astronomical Inst.
- New York Univ. (NYU), NY (United States). Center for Cosmology and Particle Physics
- Ecole Polytechnique Federale Lausanne (Switzlerland). Inst. of Physics
- Univ. of Utah, Salt Lake City, UT (United States). Dept. of Physics and Astronomy; National Optical Astronomy Observatory, Tucson, AZ (United States)
- Apache Point Observatory and New Mexico State Univ., Sunspot, NM (United States)
- Univ. of Paris-Saclay, Gif-sur-Yvette (France
- Max Planck Inst. for Extraterrestrial Physics, Munich (Germany)
- National Autonomous Univ. of Mexico (Mexico). Inst. of Physics
- Chinese Academy of Sciences (CAS), Beijing (China). National Astronomy Observatories
- Univ. of Paris-Saclay, Gif-sur-Yvette (France)
- Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
- Sorbonne Univ., Paris (France); Univ. Pierre et Marie Curie, Paris (France). Lab. of Nuclear Physics and High Energy
- Univ. Pierre et Marie Curie, Paris (France)
- Univ. of California, Berkeley, CA (United States). Dept. of Astronomy
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States). Dept. of Physics; Univ. of California, Berkeley, CA (United States). Berkeley Center for Cosmological Physics, Dept. of Physics
- Ecole Polytechnique Federale Lausanne (Switzlerland). Inst. of Physics; Russian Academy of Sciences (RAS), Moscow (Russian Federation). Inst. for Nuclear Research
- Institute of Astrophysics of the Canary Islands (IAC), La Laguna (Spain); Univ. of La Laguna (Spain)
- Ecole Polytechnique Federale Lausanne (Switzlerland). Inst. of Physics; Aix-Marseille Univ., Marseille (France)
- The Ohio State Univ., Columbus, OH (United States). Center for Cosmology and Astro-Particle Physics
- Univ. of Pittsburgh, PA (United States). Dept. of Physics and Astronomy, Pittsburgh Particle Physics, Astrophysics and Cosmology Center
- Aix-Marseille Univ., Marseille (France)
- Univ. of Paris (France). Inst. of Astrophysics
- Autonomous Univ. of Madrid (Spain). Inst. of Theoretical Physics; Campus of International Excellence, Madrid (Spain); Inst. of Astrophysics of Andalucia, Granada (Spain)
- Univ. of Pittsburgh, PA (United States). Dept. of Physics, Astronomy and the Pittsburgh Partice Physics, Astrophysics and Cosmology Center
- Autonomous Univ. of Madrid (Spain). Inst. of Theoretical Physics, Dept. of Theoretical Physics; Campus of International Excellence, Madrid (Spain)
- Univ. of Portsmouth (United Kingdom). Inst. of Cosmology and Gravitation; The Ohio State Univ., Columbus, OH (United States). Center for Cosmology and Astro Particle Physics
- Sejong Univ., Seoul (Korea, Republic of). Dept. of Physics and Astronomy
- Carnegie Mellon Univ., Pittsburgh, PA (United States). Dept. of Physics; Univ. of La Laguna (ULL) (Spain). Dept. of Astrophysics
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Pennsylvania State Univ., University Park, PA (United States). Dept. of Astronomy and Astrophysics, Inst. for Gravitation and the Cosmos
- The Ohio State Univ., Columbus, OH (United States). Dept. of Physics and Astronomy
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Univ. of St. Andrews, Scotland (United Kingdom). School of Physics and Astronomy
- Univ. of Portsmouth (United Kingdom). Inst. of Cosmology and Gravitation; Chinese Academy of Sciences (CAS), Beijing (China). National Astronomy Observatories
- Univ. of Paris-Saclay, Gif-sur-Yvette (France); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Tsinghua Univ., Beijing (China). Tsinghua Center for Astrophysics, Dept. of Physics
- Yale Univ., New Haven, CT (United States). Dept. of Physics
We present measurements of the Baryon Acoustic Oscillation (BAO) scale in redshift-space using the clustering of quasars. We consider a sample of 147,000 quasars from the extended Baryon Oscillation Spectroscopic Survey (eBOSS) distributed over 2044 square degrees with redshifts $0.8 < z < 2.2$ and measure their spherically-averaged clustering in both configuration and Fourier space. Our observational dataset and the 1400 simulated realizations of the dataset allow us to detect a preference for BAO that is greater than 2.5$$\sigma$$. We determine the spherically averaged BAO distance to $z = 1.52$ to 4.4 per cent precision: $$D_V(z=1.52)=3855\pm170 \left(r_{\rm d}/r_{\rm d, fid}\right)\ $$Mpc. This is the first time the location of the BAO feature has been measured between redshifts 1 and 2. Our result is fully consistent with the prediction obtained by extrapolating the Planck flat $$\Lambda$$CDM best-fit cosmology. All of our results are consistent with basic large-scale structure (LSS) theory, confirming quasars to be a reliable tracer of LSS, and provide a starting point for numerous cosmological tests to be performed with eBOSS quasar samples. We combine our result with previous, independent, BAO distance measurements to construct an updated BAO distance-ladder. Using these BAO data alone and marginalizing over the length of the standard ruler, we find $$\Omega_{\Lambda} > 0$$ at 6.5$$\sigma$$ significance when testing a $$\Lambda$$CDM model with free curvature.
- Research Organization:
- The Ohio State Univ., Columbus, OH (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Grant/Contract Number:
- SC0011726; SC0012704; AC02-05CH11231
- OSTI ID:
- 1602479
- Alternate ID(s):
- OSTI ID: 1392224; OSTI ID: 1398497
- Report Number(s):
- BNL-114222-2017-JA; TRN: US2104020
- Journal Information:
- Monthly Notices of the Royal Astronomical Society, Vol. 473, Issue 4; ISSN 0035-8711
- Publisher:
- Royal Astronomical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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