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Title: Modelling the large-scale redshift-space 3-point correlation function of galaxies

Abstract

We present a configuration-space model of the large-scale galaxy 3-point correlation function (3PCF) based on leading-order perturbation theory and including redshift-space distortions (RSD). This model should be useful in extracting distance-scale information from the 3PCF via the baryon acoustic oscillation method. We include the first redshift-space treatment of biasing by the baryon-dark matter relative velocity. Overall, on large scales the effect of RSD is primarily a renormalization of the 3PCF that is roughly independent of both physical scale and triangle opening angle; for our adopted Ωm and bias values, the rescaling is a factor of ~1.8. We also present an efficient scheme for computing 3PCF predictions from our model, important for allowing fast exploration of the space of cosmological parameters in future analyses.

Authors:
 [1];  [2]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
  2. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1530294
DOE Contract Number:  
AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Volume: 469; Journal Issue: 2; Journal ID: ISSN 0035-8711
Publisher:
Royal Astronomical Society
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; cosmology: theory; distance scale; large-scale structure of Universe

Citation Formats

Slepian, Zachary, and Eisenstein, Daniel J. Modelling the large-scale redshift-space 3-point correlation function of galaxies. United States: N. p., 2017. Web. doi:10.1093/mnras/stx490.
Slepian, Zachary, & Eisenstein, Daniel J. Modelling the large-scale redshift-space 3-point correlation function of galaxies. United States. doi:10.1093/mnras/stx490.
Slepian, Zachary, and Eisenstein, Daniel J. Wed . "Modelling the large-scale redshift-space 3-point correlation function of galaxies". United States. doi:10.1093/mnras/stx490. https://www.osti.gov/servlets/purl/1530294.
@article{osti_1530294,
title = {Modelling the large-scale redshift-space 3-point correlation function of galaxies},
author = {Slepian, Zachary and Eisenstein, Daniel J.},
abstractNote = {We present a configuration-space model of the large-scale galaxy 3-point correlation function (3PCF) based on leading-order perturbation theory and including redshift-space distortions (RSD). This model should be useful in extracting distance-scale information from the 3PCF via the baryon acoustic oscillation method. We include the first redshift-space treatment of biasing by the baryon-dark matter relative velocity. Overall, on large scales the effect of RSD is primarily a renormalization of the 3PCF that is roughly independent of both physical scale and triangle opening angle; for our adopted Ωm and bias values, the rescaling is a factor of ~1.8. We also present an efficient scheme for computing 3PCF predictions from our model, important for allowing fast exploration of the space of cosmological parameters in future analyses.},
doi = {10.1093/mnras/stx490},
journal = {Monthly Notices of the Royal Astronomical Society},
issn = {0035-8711},
number = 2,
volume = 469,
place = {United States},
year = {2017},
month = {3}
}

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