Detection of Baryon Acoustic Oscillation features in the large-scale 3-point correlation function of SDSS BOSS DR12 CMASS galaxies
Journal Article
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· Monthly Notices of the Royal Astronomical Society
- Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Univ. of Utah, Salt Lake City, UT (United States)
- Univ. Autonoma de Madrid, Madrid (Spain); Leibniz-Institut fur Astrophysik Potsdam (AIP), Potsdam (Germany)
- Sorbonne Univ. Paris (France); Univ. Pierre et Marie Curie, Paris (France)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States); Univ. of California, Berkeley, CA (United States)
- Univ. of Portsmouth, Portsmouth (United Kingdom)
- The Ohio State Univ., Columbus, OH (United States)
- Sejong Univ., Seoul (Korea)
- Ohio Univ., Athens, OH (United States)
- Univ. Nacional Autonoma de Mexico (UNAM), Mexico City (Mexico). Inst. de Fisica
We present the large-scale 3-point correlation function (3PCF) of the SDSS DR12 CMASS sample of 777,202 Luminous Red Galaxies, the largest-ever sample used for a 3PCF or bispectrum measurement. We make the first high-significance (4.5σ) detection of Baryon Acoustic Oscillations (BAO) in the 3PCF. Using these acoustic features in the 3PCF as a standard ruler, we measure the distance to z=0.57 to 1.7% precision (statistical plus systematic). We find DV = 2024 ± 29Mpc (stat) ± 20Mpc(sys) for our fiducial cosmology (consistent with Planck 2015) and bias model. This measurement extends the use of the BAO technique from the 2-point correlation function (2PCF) and power spectrum to the 3PCF and opens an avenue for deriving additional cosmological distance information from future large-scale structure redshift surveys such as DESI. Our measured distance scale from the 3PCF is fairly independent from that derived from the pre-reconstruction 2PCF and is equivalent to increasing the length of BOSS by roughly 10%; reconstruction appears to lower the independence of the distance measurements. In conclusion, fitting a model including tidal tensor bias yields a moderate significance (2.6σ) detection of this bias with a value in agreement with the prediction from local Lagrangian biasing.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- National Research Foundation of Korea (NRF); National Science Foundation (NSF); USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
- Grant/Contract Number:
- AC02-05CH11231; SC0012704; SC0013718
- OSTI ID:
- 1324264
- Alternate ID(s):
- OSTI ID: 1425418
- Report Number(s):
- BNL--112475-2016-JA; KA2301020
- Journal Information:
- Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Journal Issue: 2 Vol. 469; ISSN 0035-8711
- Publisher:
- Royal Astronomical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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Mon Oct 23 20:00:00 EDT 2017
· Monthly Notices of the Royal Astronomical Society
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OSTI ID:1324263