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This content will become publicly available on October 24, 2018

Title: Constraining the baryon-dark matter relative velocity with the large-scale 3-point correlation function of the SDSS BOSS DR12 CMASS galaxies

We search for a galaxy clustering bias due to a modulation of galaxy number with the baryon-dark matter relative velocity resulting from recombination-era physics. We find no detected signal and place the constraint bv <0.01 on the relative velocity bias for the CMASS galaxies. This bias is an important potential systematic of Baryon Acoustic Oscillation (BAO) method measurements of the cosmic distance scale using the 2-point clustering. Our limit on the relative velocity bias indicates a systematic shift of no more than 0.3% rms in the distance scale inferred from the BAO feature in the BOSS 2-point clustering, well below the 1% statistical error of this measurement. In conclusion, this constraint is the most stringent currently available and has important implications for the ability of upcoming large-scale structure surveys such as DESI to self-protect against the relative velocity as a possible systematic.
Authors:
 [1] ;  [2] ;  [1] ;  [3] ;  [4] ;  [5] ; ;  [6] ;  [7] ;  [3] ;  [8] ;  [3] ;  [9] ;  [10] ;  [11]
  1. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. The Ohio State Univ., Columbus, OH (United States)
  4. Univ. of Utah, Salt Lake City, UT (United States)
  5. Sorbonne Univ., Paris (France); Univ. Pierre et Marie Curie, Paris (France)
  6. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States); Univ. of California, Berkeley, CA (United States)
  7. Leibniz-Institut fur Astrophysik Potsdam (AIP), Potsdam (Germany)
  8. Univ. of Portsmouth, Portsmouth (United Kingdom)
  9. Sejong Univ., Seoul (Korea)
  10. Ohio Univ., Athens, OH (United States)
  11. Univ. Nacional Autonoma de Mexico (Mexico)
Publication Date:
Report Number(s):
BNL-112474-2016-JA
Journal ID: ISSN 0035-8711; KA2301020
Grant/Contract Number:
SC0012704; SC0013718; DGE-1144152; ST/N00180X/1
Type:
Accepted Manuscript
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Name: Monthly Notices of the Royal Astronomical Society; Journal ID: ISSN 0035-8711
Publisher:
Royal Astronomical Society
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); National Science Foundation (NSF); UK Science and Technology Facilities Research Council; UK Space Agency; European Research Council (ERC); National Research Foundation of Korea (NRF)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS
OSTI Identifier:
1324263