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Title: The reconstructed power spectrum in the Zeldovich approximation

Journal Article · · Journal of Cosmology and Astroparticle Physics
 [1];  [2];  [1]
  1. Univ. of California, Berkeley, CA (United States)
  2. European Organization for Nuclear Research (CERN), Geneva (Switzerland)
+ Show Author Affiliations

Density-reconstruction sharpens the baryon acoustic oscillations signal by undoing some of the smoothing incurred by nonlinear structure formation. In this paper we present an analytical model for reconstruction based on the Zeldovich approximation, which for the first time includes a complete set of counterterms and bias terms up to quadratic order and can fit real and redshift-space data pre- and post-reconstruction data in both Fourier and configuration space over a wide range of scales. We compare our model to n-body data at z = 0 from the DarkSky simulation [1], finding sub-percent agreement in both real space and in the redshift-space power spectrum monopole out to k = 0.4 h Mpc-1, and out to k = 0.2 h Mpc-1 in the quadrupole, with comparable agreement in configuration space. We compare our model with several popular existing alternatives, updating existing theoretical results for exponential damping in wiggle/no-wiggle splits of the BAO signal and discuss the usually-ignored effect of higher bias contributions on the reconstructed signal. In the appendices, we re-derive the former within our formalism, present exploratory results on higher-order corrections due to nonlinearities inherent to reconstruction, and present numerical techniques with which to calculate the redshift-space power spectrum of biased tracers within the Zeldovich approximation.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC02-05CH11231; SC0017860
OSTI ID:
1572842
Alternate ID(s):
OSTI ID: 1593666
Journal Information:
Journal of Cosmology and Astroparticle Physics, Vol. 2019, Issue 09; ISSN 1475-7516
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

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Nonlinear perturbation theory with halo bias and redshift-space distortions via the Lagrangian picture text January 2008
A New Statistic for Analyzing Baryon Acoustic Oscillations text January 2010
The Rockstar Phase-Space Temporal Halo Finder and the Velocity Offsets of Cluster Cores text January 2011
Towards an Optimal Reconstruction of Baryon Oscillations text January 2012
Convolution Lagrangian perturbation theory for biased tracers text January 2012
An analytic model for redshift-space distortions text January 2013
The Lagrangian-space Effective Field Theory of Large Scale Structures text January 2013
The Zeldovich approximation text January 2014
Lagrangian perturbation theory at one loop order: successes, failures, and improvements text January 2014
Reconstruction in Fourier space text January 2015
A Lagrangian effective field theory text January 2015
Perturbation theory, effective field theory, and oscillations in the power spectrum text January 2015
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: theoretical systematics and Baryon Acoustic Oscillations in the galaxy correlation function text January 2016
A Robust BAO Extractor text January 2017
BAO Extractor: bias and redshift space effects text January 2017
Beyond the plane-parallel approximation for redshift surveys text January 2017
The SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations at redshift of 0.72 with the DR14 Luminous Red Galaxy Sample text January 2017
Cubic Halo Bias in Eulerian and Lagrangian Space text January 2018
The Zeldovich approximation and wide-angle redshift-space distortions text January 2018
An iterative reconstruction of cosmological initial density fields text January 2018
Exploring the posterior surface of the large scale structure reconstruction text January 2018
Exploring redshift-space distortions in large-scale structure text January 2018
Biased Tracers of Two Fluids in the Lagrangian Picture text January 2019
Unequal time correlators and the Zeldovich approximation text January 2019
Large-Scale Structure of the Universe and Cosmological Perturbation Theory text January 2001
On the Robustness of the Acoustic Scale in the Low-Redshift Clustering of Matter text January 2006
Improving Cosmological Distance Measurements by Reconstruction of the Baryon Acoustic Peak text January 2006
Baryonic Features in the Matter Transfer Function text January 1997
Perturbation theory for BAO reconstructed fields: One-loop results in the real-space matter density field journal August 2017

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