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Title: LyaCoLoRe: synthetic datasets for current and future Lyman-α forest BAO surveys

Journal Article · · Journal of Cosmology and Astroparticle Physics
 [1];  [1];  [2];  [3];  [4];  [1];  [5];  [6];  [1];  [1];  [7];  [8];  [7];  [3];  [7];  [9];  [7];  [10];  [11];  [12] more »;  [8] « less
  1. Univ. College London (United Kingdom)
  2. Univ. of Utah, Salt Lake City, UT (United States)
  3. Univ. Nacional Autonoma de Mexico (UNAM), Mexico City (Mexico)
  4. Univ. of California, Irvine, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  5. Univ. of Guanajuato (Mexico); Consejo Nacional de Ciencia y Tecnologia, Mexico City (Mexico)
  6. Univ. of Oxford (United Kingdom)
  7. Univ. Paris-Saclay, Gif-sur-Yvette (France)
  8. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  9. Sorbonne Univ., Paris (France)
  10. Brookhaven National Lab. (BNL), Upton, NY (United States)
  11. Univ. of Michigan, Ann Arbor, MI (United States)
  12. Boston Univ., MA (United States)
+ Show Author Affiliations

© 2020 IOP Publishing Ltd and Sissa Medialab. The statistical power of Lyman-α forest Baryon Acoustic Oscillation (BAO) measurements is set to increase significantly in the coming years as new instruments such as the Dark Energy Spectroscopic Instrument deliver progressively more constraining data. Generating mock datasets for such measurements will be important for validating analysis pipelines and evaluating the effects of systematics. With such studies in mind, we present LyaCoLoRe: A package for producing synthetic Lyman-α forest survey datasets for BAO analyses. LyaCoLoRe transforms initial Gaussian random field skewers into skewers of transmitted flux fraction via a number of fast approximations. In this work we explain the methods of producing mock datasets used in LyaCoLoRe, and then measure correlation functions on a suite of realisations of such data. We demonstrate that we are able to recover the correct BAO signal, as well as large-scale bias parameters similar to literature values. Finally, we briefly describe methods to add further astrophysical effects to our skewers-high column density systems and metal absorbers-which act as potential complications for BAO analyses.

Research Organization:
Univ. of Michigan, Ann Arbor, MI (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF)
Grant/Contract Number:
SC0019193; AC02-05CH1123; AST-0950945; ST/N003853/1; ST/R000476/1
OSTI ID:
1682234
Alternate ID(s):
OSTI ID: 1737605
Journal Information:
Journal of Cosmology and Astroparticle Physics, Vol. 2020, Issue 03; ISSN 1475-7516
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English

References (72)

A refined measurement of the mean transmitted flux in the Lyα forest over 2 < z < 5 using composite quasar spectra journal February 2013
The large-scale quasar-Lyman α forest cross-correlation from BOSS journal May 2013
Correlations in the three-dimensional Lyman-alpha forest contaminated by high column density absorbers journal March 2018
The SDSS-DR12 large-scale cross-correlation of damped Lyman alpha systems with the Lyman alpha forest journal September 2017
Bias, redshift space distortions and primordial nongaussianity of nonlinear transformations: application to Ly-α forest journal March 2012
Measurement of baryon acoustic oscillation correlations at z  = 2.3 with SDSS DR12 Ly α -Forests journal June 2017
The Metallicity of High‐Redshift Galaxies: The Abundance of Zinc in 34 Damped Lyα Systems from z = 0.7 to 3.4 journal September 1997
Baryon acoustic oscillations at z = 2.34 from the correlations of Ly α absorption in eBOSS DR14 journal September 2019
Damped Lyman-alpha absorption by disk galaxies with large redshifts. I - The Lick survey journal June 1986
Pyigm/Pyigm: Initial Release For Publications dataset January 2017
A New Measurement of the Temperature–density Relation of the IGM from Voigt Profile Fitting journal September 2018
The 6dF Galaxy Survey: baryon acoustic oscillations and the local Hubble constant: 6dFGS: BAOs and the local Hubble constant journal July 2011
Mock Quasar-Lyman-α forest data-sets for the SDSS-III Baryon Oscillation Spectroscopic Survey journal May 2015
Efficient Computation of Cosmic Microwave Background Anisotropies in Closed Friedmann‐Robertson‐Walker Models journal August 2000
A New Precision Measurement of the Small-scale Line-of-sight Power Spectrum of the Ly α Forest journal December 2017
Evolution of Structure in the Intergalactic Medium and the Nature of the Lyα Forest journal April 1997
The effect of high column density systems on the measurement of the Lyman-α forest correlation function journal July 2012
HEALPix: A Framework for High‐Resolution Discretization and Fast Analysis of Data Distributed on the Sphere journal April 2005
On estimating Lyα forest correlations between multiple sightlines: Lyα forest correlations between sightlines journal May 2011
Baryon acoustic oscillations from the complete SDSS-III Ly α -quasar cross-correlation function at z = 2.4 journal December 2017
Absorber Model: the Halo-like model for the Lyman-α forest journal April 2018
The Statistics of Density Peaks and the Column Density Distribution of the Lyα Forest journal September 1997
The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: first measurement of baryon acoustic oscillations between redshift 0.8 and 2.2 journal October 2017
Minuit - a system for function minimization and analysis of the parameter errors and correlations dataset January 2019
Modelling the cosmic neutral hydrogen from DLAs and 21-cm observations journal February 2016
Pyigm/Pyigm: Initial Release For Publications dataset January 2017
Probing the circumgalactic medium at high-redshift using composite BOSS spectra of strong Lyman α forest absorbers journal May 2014
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample journal March 2017
Minuit - a system for function minimization and analysis of the parameter errors and correlations journal December 1975
Large-scale structure of the Universe and cosmological perturbation theory journal September 2002
Planck 2015 results : XIII. Cosmological parameters journal September 2016
The Evolution of the Effective Equation of State of the Intergalactic Medium journal May 2000
Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant journal September 1998
Baryon acoustic oscillations from the cross-correlation of Ly α absorption and quasars in eBOSS DR14 journal September 2019
A 14 h −3 Gpc 3 study of cosmic homogeneity using BOSS DR12 quasar sample journal November 2016
Primeval Adiabatic Perturbation in an Expanding Universe journal November 1970
Generating mock data sets for large-scale Lyman-α forest correlation measurements journal January 2012
The Lyα Forest Power Spectrum from the Sloan Digital Sky Survey journal March 2006
A lognormal model for the cosmological mass distribution journal January 1991
The triply-ionized carbon forest from eBOSS: cosmological correlations with quasars in SDSS-IV DR14 journal May 2018
The one-dimensional Ly α forest power spectrum from BOSS journal November 2013
On the Density of Neutral Hydrogen in Intergalactic Space. journal November 1965
Quasar – CIV forest cross-correlation with SDSS DR12 journal July 2018
The Lyα Forest from Gravitational Collapse in the Cold Dark Matter + Λ Model journal November 1996
Simulations of BAO reconstruction with a quasar Ly- α survey journal October 2011
A Measurement of the Temperature‐Density Relation in the Intergalactic Medium Using a New Lyα Absorption‐Line Fitting Method journal November 2001
Solving large scale structure in ten easy steps with COLA journal June 2013
Baryon acoustic oscillations in the Sloan Digital Sky Survey Data Release 7 galaxy sample journal February 2010
Baryon acoustic oscillations in the Ly α forest of BOSS DR11 quasars journal January 2015
Measurement of baryon acoustic oscillations in the Lyman-α forest fluctuations in BOSS data release 9 journal April 2013
Fitting methods for baryon acoustic oscillations in the Lyman-α forest fluctuations in BOSS data release 9 journal March 2013
Towards a unified description of the intergalactic medium at redshift z ≈ 2.5 journal December 2013
The cosmological bias factor of damped Lyman alpha systems: dependence on metal line strength journal August 2018
Baryon acoustic oscillations in the Ly α forest of BOSS quasars journal April 2013
The UCSD HIRES/Keck I Damped Lyα Abundance Database. IV. Probing Galactic Enrichment Histories with Nitrogen
  • Prochaska, Jason X.; Henry, Richard B. C.; O’Meara, John M.
  • Publications of the Astronomical Society of the Pacific, Vol. 114, Issue 799 https://doi.org/10.1086/342354
journal September 2002
Recovery of the Power Spectrum of Mass Fluctuations from Observations of the Lyα Forest journal March 1998
The Lyman-α forest in three dimensions: measurements of large scale flux correlations from BOSS 1st-year data journal September 2011
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
Bias and variance of angular correlation functions journal July 1993
The 2dF Galaxy Redshift Survey: power-spectrum analysis of the final data set and cosmological implications journal September 2005
Clustering in real space and in redshift space journal July 1987
Measurements of Ω and Λ from 42 High‐Redshift Supernovae journal June 1999
Gravitational collapse of small-scale structure as the origin of the Lyman-alpha forest journal December 1994
The extended Baryon Oscillation Spectroscopic Survey: Variability selection and quasar luminosity function journal February 2016
The Extended Baryon Oscillation Spectroscopic Survey: Measuring the Cross-correlation between the Mg ii Flux Transmission Field and Quasars and Galaxies at z = 0.59 journal June 2019
Detection of the Baryon Acoustic Peak in the Large‐Scale Correlation Function of SDSS Luminous Red Galaxies journal November 2005
Equation of state of the photoionized intergalactic medium journal November 1997
Dark energy and curvature from a future baryonic acoustic oscillation survey using the Lyman- α forest journal September 2007
The WiggleZ Dark Energy Survey: mapping the distance-redshift relation with baryon acoustic oscillations: WiggleZ Survey: BAOs in redshift slices journal October 2011
The extended Baryon Oscillation Spectroscopic Survey: Variability selection and quasar luminosity function journal February 2016
Primeval Adiabatic Perturbation in an Expanding Universe journal November 1970
The SDSS-DR12 large-scale cross-correlation of damped Lyman alpha systems with the Lyman alpha forest journal September 2017

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Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
cosmology
Lyman alpha forest
baryon acoustic oscillations