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

Journal Article · · Monthly Notices of the Royal Astronomical Society
 [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)
+ Show Author Affiliations

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.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
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)
Grant/Contract Number:
SC0012704; SC0013718
OSTI ID:
1324263
Report Number(s):
BNL--112474-2016-JA; KA2301020
Journal Information:
Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Journal Issue: 2 Vol. 474; ISSN 0035-8711
Publisher:
Royal Astronomical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (5)

Biased tracers of two fluids in the Lagrangian picture journal June 2019
Estimating covariance matrices for two- and three-point correlation function moments in Arbitrary Survey Geometries journal October 2019
Developing the 3-point Correlation Function for the Turbulent Interstellar Medium journal July 2018
Biased Tracers of Two Fluids in the Lagrangian Picture text January 2019
Estimating Covariance Matrices for Two- and Three-Point Correlation Function Moments in Arbitrary Survey Geometries text January 2019

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