Quasar-Lyman α forest cross-correlation from BOSS DR11: Baryon Acoustic Oscillations
Lawrence Berkeley National Laboratory · University of Zurich · +29 more institutions
Abstract
We measure the large-scale cross-correlation of quasars with the Lyα 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 c /( H ( z = 2.36) r s ) = 9.0±0.3 and across the line of sight D A ( 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±8 km s −1 Mpc −1…
Citation impact
- FWCI
- 25.49
- Percentile
- 100%
- References
- 60
Authors
43- AFAndreu Font-RiberaCorresponding
Lawrence Berkeley National Laboratory, University of Zurich
- DKD. Kirkby
University of California, Irvine
- NGNicolás G. Busca
Centre National de la Recherche Scientifique, Délégation Paris 7, Université Paris Cité, Commissariat à l'Énergie Atomique et aux Énergies Alternatives
- JMJordi Miralda‐Escudé
Institució Catalana de Recerca i Estudis Avançats, Institut Català de Ciències del Clima, Institut de Ciències del Cosmos
- NPNicholas P. Ross
Lawrence Berkeley National Laboratory, Drexel University
Topics & keywords
- Physics
- Quasar
- Baryon acoustic oscillations
- Baryon
- Boss
- Astrophysics
- Astronomy
- Lyman-alpha forest
- Life in Land