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Quasar-Lyman a forest cross-correlation from BOSS DR11: Baryon Acoustic Oscillations

Font Ribera, A
•
Kirkby, D
•
Busca, N
altro
Viel, Matteo
2014
  • journal article

Periodico
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Abstract
We measure the large-scale cross-correlation of quasars with the Ly alpha forest absorption, using over 164,000 quasars from Data Release 11 of the SDSS-III Baryon Oscillation Spectroscopic Survey. We extend the previous study of roughly 60,000 quasars from Data Release 9 to larger separations, allowing a measurement of the Baryonic Acoustic Oscillation (BAO) scale along the line of sight cl(H(z = 2.36) r(s)) = 9.0 +/- 0.3 and across the line of sight DA(z = 2.36) / r(s) = 10.8 +/- 0.4, consistent with CMB and other BAO data. Using the best fit value of the sound horizon from Planck data (r(s) = 147.49 Mpc), we can translate these results to a measurement of the Hubble parameter of H(z = 2.36) = 226 +/- 8km s(-1)Mpc(-1) and of the angular diameter distance of DA(z = 2.36) = 1590 +/- 60 Mpc. The measured cross-correlation function and an update of the code to fit the BAO scale (baofit) are made publicly available.
DOI
10.1088/1475-7516/2014/05/027
WOS
WOS:000336092200029
Archivio
http://hdl.handle.net/20.500.11767/17063
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84902574229
https://arxiv.org/abs/1311.1767
http://cdsads.u-strasbg.fr/abs/2014JCAP...05..027F
Diritti
metadata only access
Soggetti
  • baryon acoustic oscil...

  • dark energy experimen...

  • Lyman alpha forest

  • redshift surveys

  • Settore FIS/05 - Astr...

Scopus© citazioni
313
Data di acquisizione
Jun 2, 2022
Vedi dettagli
Web of Science© citazioni
345
La settimana scorsa
2
Data di acquisizione
Mar 27, 2024
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