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Title: Baryon acoustic oscillations from the complete SDSS-III Ly α -quasar cross-correlation function at z = 2.4

Abstract

We present a measurement of baryon acoustic oscillations (BAO) in the cross-correlation of quasars with the Lyα-forest flux-transmission at a mean redshift z = 2.40. The measurement uses the complete SDSS-III data sample: 168,889 forests and 234,367 quasars from the SDSS Data Release DR12. In addition to the statistical improvement on our previous study using DR11, we have implemented numerous improvements at the analysis level allowing a more accurate measurement of this cross-correlation. We also developed the first simulations of the cross-correlation allowing us to test different aspects of our data analysis and to search for potential systematic errors in the determination of the BAO peak position. We measure the two ratios DH(z = 2.40)=rd = 9.01 ± 0.36 and DM(z = 2.40)=rd = 35.7 ±1.7, where the errors include marginalization over the non-linear velocity of quasars and the metal - quasar cross-correlation contribution, among other effects. These results are within 1.8σ of the prediction of the flat-ΛCDM model describing the observed CMB anisotropies.We combine this study with the Lyα-forest auto-correlation function (Bautista et al. 2017), yielding DH(z = 2.40)=rd = 8.94 ± 0.22 and DM(z = 2.40)=rd = 36.6 ± 1.2, within 2.3σ of the same flat-ΛCDM model.

Authors:
 [1];  [1];  [2];  [3];  [4];  [1];  [5];  [6];  [1];  [6];  [7];  [8];  [9];  [10];  [11];  [1];  [2];  [11];  [12];  [2] more »;  [13];  [14];  [15];  [16];  [17];  [1] « less
+ Show Author Affiliations
  1. Univ. Paris-Saclay, Gif-sur-Yvette (France)
  2. Aix Marseille Univ., Marseille (France). Lab. d'Astrophysique de Marseille (LAM)
  3. CNRS/IN2P3. Univ. Paris (France). Observatoire de Paris. AstroParticule et Cosmologie (APC)
  4. Univ. Pierre et Marie Curie, Paris (France)
  5. Univ. Paris-Saclay, Gif-sur-Yvette (France); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  6. Univ. of Utah, Salt Lake City, UT (United States). Dept. of Physics and Astronomy
  7. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  8. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); King's College London (United Kingdom). Dept. of Physics and Astronomy
  9. Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy
  10. Institucio Catalana de Recerca i Estudis Avancats, Barcelona, Catalonia (Spain); Univ. de Barcelona, Barcelona, Catalonia (Spain). Inst. de Ciencies del Cosmos
  11. Univ. Paris (France). Inst. d'Astrophysique de Paris
  12. Univ. de Barcelona, Barcelona, Catalonia (Spain). Inst. de Ciencies del Cosmos
  13. Univ. of Edinburgh, Scotland (United Kingdom). The Royal Observatory
  14. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  15. Pennsylvania State Univ., University Park, PA (United States). Dept of Astronomy and Astrophysics; Pennsylvania State Univ., University Park, PA (United States). Inst. for Gravitation and the Cosmos
  16. Brookhaven National Lab. (BNL), Upton, NY (United States)
  17. The Ohio State Univ., Columbus, OH (United States). Dept of Astronomy
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1530307
Alternate Identifier(s):
OSTI ID: 1377365
Report Number(s):
BNL-114215-2017-JA
Journal ID: ISSN 0004-6361; ark:/13030/qt16n173wh
Grant/Contract Number:  
AC02-05CH11231; SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Astronomy and Astrophysics
Additional Journal Information:
Journal Volume: 608; Journal ID: ISSN 0004-6361
Publisher:
EDP Sciences
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; cosmology; dark energy; baryon acoustic oscillations; BAO; quasar; Lya-forest; large scale structure

Citation Formats

du Mas des Bourboux, Hélion, Le Goff, Jean-Marc, Blomqvist, Michael, Busca, Nicolás G., Guy, Julien, Rich, James, Yèche, Christophe, Bautista, Julian E., Burtin, Étienne, Dawson, Kyle S., Eisenstein, Daniel J., Font-Ribera, Andreu, Kirkby, David, Miralda-Escudé, Jordi, Noterdaeme, Pasquier, Palanque-Delabrouille, Nathalie, Pâris, Isabelle, Petitjean, Patrick, Pérez-Ràfols, Ignasi, Pieri, Matthew M., Ross, Nicholas P., Schlegel, David J., Schneider, Donald P., Slosar, Anže, Weinberg, David H., and Zarrouk, Pauline. Baryon acoustic oscillations from the complete SDSS-III Ly α -quasar cross-correlation function at z = 2.4. United States: N. p., 2017. Web. doi:10.1051/0004-6361/201731731.
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du Mas des Bourboux, Hélion, Le Goff, Jean-Marc, Blomqvist, Michael, Busca, Nicolás G., Guy, Julien, Rich, James, Yèche, Christophe, Bautista, Julian E., Burtin, Étienne, Dawson, Kyle S., Eisenstein, Daniel J., Font-Ribera, Andreu, Kirkby, David, Miralda-Escudé, Jordi, Noterdaeme, Pasquier, Palanque-Delabrouille, Nathalie, Pâris, Isabelle, Petitjean, Patrick, Pérez-Ràfols, Ignasi, Pieri, Matthew M., Ross, Nicholas P., Schlegel, David J., Schneider, Donald P., Slosar, Anže, Weinberg, David H., & Zarrouk, Pauline. Baryon acoustic oscillations from the complete SDSS-III Ly α -quasar cross-correlation function at z = 2.4. United States. https://doi.org/10.1051/0004-6361/201731731
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du Mas des Bourboux, Hélion, Le Goff, Jean-Marc, Blomqvist, Michael, Busca, Nicolás G., Guy, Julien, Rich, James, Yèche, Christophe, Bautista, Julian E., Burtin, Étienne, Dawson, Kyle S., Eisenstein, Daniel J., Font-Ribera, Andreu, Kirkby, David, Miralda-Escudé, Jordi, Noterdaeme, Pasquier, Palanque-Delabrouille, Nathalie, Pâris, Isabelle, Petitjean, Patrick, Pérez-Ràfols, Ignasi, Pieri, Matthew M., Ross, Nicholas P., Schlegel, David J., Schneider, Donald P., Slosar, Anže, Weinberg, David H., and Zarrouk, Pauline. Tue . "Baryon acoustic oscillations from the complete SDSS-III Ly α -quasar cross-correlation function at z = 2.4". United States. https://doi.org/10.1051/0004-6361/201731731. https://www.osti.gov/servlets/purl/1530307.
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@article{osti_1530307,
title = {Baryon acoustic oscillations from the complete SDSS-III Ly α -quasar cross-correlation function at z = 2.4},
author = {du Mas des Bourboux, Hélion and Le Goff, Jean-Marc and Blomqvist, Michael and Busca, Nicolás G. and Guy, Julien and Rich, James and Yèche, Christophe and Bautista, Julian E. and Burtin, Étienne and Dawson, Kyle S. and Eisenstein, Daniel J. and Font-Ribera, Andreu and Kirkby, David and Miralda-Escudé, Jordi and Noterdaeme, Pasquier and Palanque-Delabrouille, Nathalie and Pâris, Isabelle and Petitjean, Patrick and Pérez-Ràfols, Ignasi and Pieri, Matthew M. and Ross, Nicholas P. and Schlegel, David J. and Schneider, Donald P. and Slosar, Anže and Weinberg, David H. and Zarrouk, Pauline},
abstractNote = {We present a measurement of baryon acoustic oscillations (BAO) in the cross-correlation of quasars with the Lyα-forest flux-transmission at a mean redshift z = 2.40. The measurement uses the complete SDSS-III data sample: 168,889 forests and 234,367 quasars from the SDSS Data Release DR12. In addition to the statistical improvement on our previous study using DR11, we have implemented numerous improvements at the analysis level allowing a more accurate measurement of this cross-correlation. We also developed the first simulations of the cross-correlation allowing us to test different aspects of our data analysis and to search for potential systematic errors in the determination of the BAO peak position. We measure the two ratios DH(z = 2.40)=rd = 9.01 ± 0.36 and DM(z = 2.40)=rd = 35.7 ±1.7, where the errors include marginalization over the non-linear velocity of quasars and the metal - quasar cross-correlation contribution, among other effects. These results are within 1.8σ of the prediction of the flat-ΛCDM model describing the observed CMB anisotropies.We combine this study with the Lyα-forest auto-correlation function (Bautista et al. 2017), yielding DH(z = 2.40)=rd = 8.94 ± 0.22 and DM(z = 2.40)=rd = 36.6 ± 1.2, within 2.3σ of the same flat-ΛCDM model.},
doi = {10.1051/0004-6361/201731731},
journal = {Astronomy and Astrophysics},
number = ,
volume = 608,
place = {United States},
year = {Tue Aug 08 00:00:00 EDT 2017},
month = {Tue Aug 08 00:00:00 EDT 2017}
}
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https://doi.org/10.1051/0004-6361/201731731
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  • Haridasu, Balakrishna S.; Luković, Vladimir V.; D’Agostino, Rocco
  • Astronomy & Astrophysics, Vol. 600
  • DOI: 10.1051/0004-6361/201730469

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

  • Kaiser, Nick
  • Monthly Notices of the Royal Astronomical Society, Vol. 227, Issue 1
  • DOI: 10.1093/mnras/227.1.1

The Sloan Digital sky Survey Quasar Catalog. v. Seventh data Release
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Improved cosmological constraints from a joint analysis of the SDSS-II and SNLS supernova samples
journal, August 2014

Detection of the Baryon Acoustic Peak in the Large‐Scale Correlation Function of SDSS Luminous Red Galaxies
journal, November 2005

  • Eisenstein, Daniel J.; Zehavi, Idit; Hogg, David W.
  • The Astrophysical Journal, Vol. 633, Issue 2
  • DOI: 10.1086/466512

Absorption spectrum of the Z = 3.78 QSO 2000-330. II - The redshift and equivalent width distributions of primordial hydrogen clouds
journal, October 1986

  • Murdoch, H. S.; Hunstead, R. W.; Pettini, M.
  • The Astrophysical Journal, Vol. 309
  • DOI: 10.1086/164573

Small-scale fluctuations of relic radiation
journal, April 1970

  • Sunyaev, R. A.; Zeldovich, Ya. B.
  • Astrophysics and Space Science, Vol. 7, Issue 1
  • DOI: 10.1007/BF00653471
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