Constraining the baryon-dark matter relative velocity with the large-scale 3-point correlation function of the SDSS BOSS DR12 CMASS galaxies
- Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- The Ohio State Univ., Columbus, OH (United States)
- Univ. of Utah, Salt Lake City, UT (United States)
- 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)
- Leibniz-Institut fur Astrophysik Potsdam (AIP), Potsdam (Germany)
- Univ. of Portsmouth, Portsmouth (United Kingdom)
- Sejong Univ., Seoul (Korea)
- Ohio Univ., Athens, OH (United States)
- Univ. Nacional Autonoma de Mexico (Mexico)
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 Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP); 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; DGE-1144152; ST/N00180X/1
- OSTI ID:
- 1324263
- Report Number(s):
- BNL-112474-2016-JA; KA2301020
- Journal Information:
- Monthly Notices of the Royal Astronomical Society, Vol. 474, Issue 2; ISSN 0035-8711
- Publisher:
- Royal Astronomical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Biased tracers of two fluids in the Lagrangian picture
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Estimating covariance matrices for two- and three-point correlation function moments in Arbitrary Survey Geometries
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journal | October 2019 |
Developing the 3-point Correlation Function for the Turbulent Interstellar Medium
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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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