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Title: Galaxy power-spectrum responses and redshift-space super-sample effect

Journal Article · · Journal of Cosmology and Astroparticle Physics
 [1];  [2];  [3]
  1. Univ. of California, Berkeley, CA (United States). Berkeley Center for Cosmological Physics, Dept. of Phyiscs, & Lawrence Berkeley National Lab.; Univ. of Tokyo (Japan). Kavli Inst. for the Physics and Mathematics of the Universe (WPI), UTIAS
  2. Inst. for Advanced Study, Princeton, NJ (United States)
  3. Univ. of California, Berkeley, CA (United States). Dept. of Physics; Univ. of California, Berkeley, CA (United States). Berkeley Center for Cosmological Physics; Univ. of California, Berkeley, CA (United States). Lawrence Berkeley National Lab.
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As a major source of cosmological information, galaxy clustering is susceptible to long-wavelength density and tidal fluctuations. These long modes modulate the growth and expansion rate of local structures, shifting them in both amplitude and scale. These effects are often named the growth and dilation effects, respectively. In particular the dilation shifts the baryon acoustic oscillation (BAO) peak and breaks the assumption of the Alcock-Paczynski (AP) test. This cannot be removed with reconstruction techniques because the effect originates from long modes outside the survey. In redshift space, the long modes generate a large-scale radial peculiar velocity that affects the redshift-space distortion (RSD) signal. We compute the redshift-space response functions of the galaxy power spectrum to long density and tidal modes at leading order in perturbation theory, including both the growth and dilation terms. We validate these response functions against measurements from simulated galaxy mock catalogs. As one application, long density and tidal modes beyond the scale of a survey correlate various observables leading to an excess error known as the super-sample covariance, and thus weaken their constraining power. We quantify the super-sample effect on BAO, AP, and RSD measurements, and study its impact on current and future surveys.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1523615
Journal Information:
Journal of Cosmology and Astroparticle Physics, Vol. 2018, Issue 02; ISSN 1475-7516
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 40 works
Citation information provided by
Web of Science

References (67)

The local value of H 0 in an inhomogeneous universe journal February 2016
Mock galaxy catalogues using the quick particle mesh method journal November 2013
Biasing and hierarchical statistics in large-scale structure journal August 1993
Towards optimal extraction of cosmological information from nonlinear data journal December 2017
Uncorrelated modes of the non-linear power spectrum journal February 2000
Galaxy bias and non-linear structure formation in general relativity journal October 2011
Power spectrum super-sample covariance journal June 2013
Joint likelihood function of cluster counts and n -point correlation functions: Improving their power through including halo sample variance journal December 2014
Correcting for the Alias Effect When Measuring the Power Spectrum Using a Fast Fourier Transform journal February 2005
Improving Cosmological Distance Measurements by Reconstruction of the Baryon Acoustic Peak journal August 2007
Simulations of Baryon Acoustic Oscillations. ii. Covariance Matrix of the Matter Power Spectrum journal July 2009
Initial Conditions to Cosmological N ‐Body Simulations, or, How to Run an Ensemble of Simulations journal December 2005
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample journal March 2017
Power-spectrum analysis of three-dimensional redshift surveys journal May 1994
Probing dark energy with cluster counts and cosmic shear power spectra: including the full covariance journal December 2007
Sample Variance Considerations for Cluster Surveys journal February 2003
The impact of non-Gaussian errors on weak lensing surveys journal June 2009
Cosmic variance of the local Hubble flow in large-scale cosmological simulations journal December 2013
Accurate estimators of correlation functions in Fourier space journal May 2016
Separating the Universe into real and fake energy densities journal July 2016
Implementing the dc mode in Cosmological Simulations with Supercomoving Variables journal June 2011
On the spatial correlations of Abell clusters journal September 1984
Large-scale structure and gravitational waves. III. Tidal effects journal April 2014
Large-scale tidal effect on redshift-space power spectrum in a finite-volume survey journal April 2017
Evidence for quadratic tidal tensor bias from the halo bispectrum journal October 2012
Galaxy two-point covariance matrix estimation for next generation surveys journal September 2017
Dark matter and halo bispectrum in redshift space: theory and applications journal December 2014
FAST GENERATION OF ENSEMBLES OF COSMOLOGICAL N -BODY SIMULATIONS VIA MODE RESAMPLING journal July 2011
Gravity and large-scale nonlocal bias journal April 2012
Nonlinear reconstruction journal December 2017
Super-sample signal journal November 2014
Perturbative approach to covariance matrix of the matter power spectrum journal December 2016
Clustering of dark matter tracers: generalizing bias for the coming era of precision LSS journal August 2009
Quintessential scale dependence from separate universe simulations journal December 2016
The angle-averaged squeezed limit of nonlinear matter N -point functions journal August 2015
Beyond boundaries of redshift surveys: assessing mass fluctuations on ``super-survey" scales journal December 2013
Cosmic Variance and the Measurement of the Local Hubble Parameter journal June 2013
Responses in large-scale structure journal June 2017
On measuring the covariance matrix of the non-linear power spectrum from simulations journal September 2006
Position-dependent power spectrum of the large-scale structure: a novel method to measure the squeezed-limit bispectrum journal May 2014
Super-sample covariance in simulations journal April 2014
Measuring Cosmological Parameters with Galaxy Surveys journal November 1997
The growth of correlations in the matter power spectrum journal October 1999
Separate universe consistency relation and calibration of halo bias journal March 2016
Precision measurement of the local bias of dark matter halos journal February 2016
Relationship between the CMB, Sunyaev-Zel’dovich cluster counts, and local Hubble parameter measurements in a simple void model journal January 2016
Toward a Measurement of the Cosmological Geometry at z ∼ 2: Predicting Lyα Forest Correlation in Three Dimensions and the Potential of Future Data Sets journal March 2003
Iterative initial condition reconstruction journal July 2017
Thinking outside the box: effects of modes larger than the survey on matter power spectrum covariance journal April 2012
Value of H 0 in the Inhomogeneous Universe journal June 2014
Clustering in real space and in redshift space journal July 1987
Towards physics responsible for large-scale Lyman-α forest bias parameters journal March 2016
The Bispectrum as a Signature of Gravitational Instability in Redshift Space journal June 1999
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: baryon acoustic oscillations in the Fourier space journal September 2016
Analytic model for the matter power spectrum, its covariance matrix and baryonic effects journal October 2014
Cosmic tidal reconstruction journal May 2016
Gaussian covariance matrices for anisotropic galaxy clustering measurements journal February 2016
Separate universe simulations journal December 2014
Cosmology and the bispectrum journal July 2006
New method for initial density reconstruction journal January 2018
Galaxy Bias and non-Linear Structure Formation in General Relativity text January 2011
Gravity and Large-Scale Non-local Bias text January 2012
Evidence for Quadratic Tidal Tensor Bias from the Halo Bispectrum text January 2012
Gaussian covariance matrices for anisotropic galaxy clustering measurements text January 2015
Towards optimal extraction of cosmological information from nonlinear data text January 2017
Bispectrum Supersample Covariance text January 2017
The Growth of Correlations in the Matter Power Spectrum text January 1998

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Covariance of the galaxy angular power spectrum with the halo model journal July 2018
Measurement of Void Bias Using Separate Universe Simulations journal January 2020

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