The WiggleZ Dark Energy Survey: joint measurements of the expansion and growth history at z < 1
Swinburne University of Technology · Australian Astronomical Observatory · +11 more institutions
Abstract
We perform a joint determination of the distance-redshift relation and cosmic expansion rate at redshifts z = 0.44, 0.6 and 0.73 by combining measurements of the baryon acoustic peak and Alcock-Paczynski distortion from galaxy clustering in the WiggleZ Dark Energy Survey, using a large ensemble of mock catalogues to calculate the covariance between the measurements. We find that D A(z) = (1205 ± 114, 1380 ± 95, 1534 ± 107)Mpc and H(z) = (82.6 ± 7.8, 87.9 ± 6.1, 97.3 ± 7.0)kms -1Mpc -1 at these three redshifts. Further combining our results with other baryon acoustic oscillation and distant supernovae data sets, we use a Monte Carlo Markov Chain technique to determine the evolution of the Hubble parameter H(z)…
Citation impact
- FWCI
- 30.78
- Percentile
- 100%
- References
- 42
Authors
26- CBChris BlakeCorresponding
Swinburne University of Technology
- SBSarah Brough
Australian Astronomical Observatory
- MCMatthew Colless
Australian Astronomical Observatory
- CCCarlos Contreras
Swinburne University of Technology
- WCWarrick Couch
Swinburne University of Technology
Topics & keywords
- Dark energy
- Redshift
- Galaxy
- Baryon acoustic oscillations
- Cosmology
- Baryon
- Covariance
- Monte Carlo method