The WiggleZ Dark Energy Survey: constraining galaxy bias and cosmic growth with three-point correlation functions

Marín, Felipe A.; Blake, Chris; Poole, Gregory B.; McBride, Cameron K.; Brough, Sarah; Colless, Matthew; Contreras, Carlos; Couch, Warrick; Croton, Darren J.; Croom, Scott; Davis, Tamara; Drinkwater, Michael J.; Forster, Karl; Gilbank, David; Gladders, Mike; Glazebrook, Karl; Jelliffe, Ben; Jurek, Russell J.; Li, I-hui; Madore, Barry; Martin, D. Christopher; Pimbblet, Kevin; Pracy, Michael; Sharp, Rob; Wisnioski, Emily; Woods, David; Wyder, Ted K.; Yee, H. K. C.

Abstract

Higher order statistics are a useful and complementary tool for measuring the clustering of galaxies, containing information on the non-Gaussian evolution and morphology of large-scale structure in the Universe. In this work we present measurements of the three-point correlation function (3PCF) for 187 000 galaxies in theWiggleZ spectroscopic galaxy survey.We explore the WiggleZ 3PCF scale and shape dependence at three different epochs z = 0.35, 0.55 and 0.68, the highest redshifts where these measurements have been made to date. Using N-body simulations to predict the clustering of dark matter, we constrain the linear and non-linear bias parameters of WiggleZ galaxies with respect to dark matter, and marginalize over them to obtain constraints on σ 8 (z), the variance of perturbations on a scale of 8 h-1 Mpc and its evolution with redshift. These measurements of σ 8 (z), which have 10-20 per cent accuracies, are consistent with the predictions of the δ cold dark matter concordance cosmology and test this model in a new way. © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.

Citation

Marín, F. A., Blake, C., Poole, G. B., McBride, C. K., Brough, S., Colless, M., Contreras, C., Couch, W., Croton, D. J., Croom, S., Davis, T., Drinkwater, M. J., Forster, K., Gilbank, D., Gladders, M., Glazebrook, K., Jelliffe, B., Jurek, R. J., Li, I.-H., Madore, B., …Yee, H. K. C. (2013). The WiggleZ Dark Energy Survey: constraining galaxy bias and cosmic growth with three-point correlation functions. Monthly notices of the Royal Astronomical Society, 432(4), 2654-2668. https://doi.org/10.1093/mnras/stt520

• Journal Article Type: Article
• Acceptance Date: Mar 22, 2013
• Online Publication Date: May 24, 2013
• Publication Date: Jul 11, 2013
• Deposit Date: Jun 29, 2018
• Publicly Available Date: Jul 24, 2018
• Journal: Monthly Notices of the Royal Astronomical Society
• Print ISSN: 0035-8711
• Electronic ISSN: 1365-2966
• Publisher: Oxford University Press
• Peer Reviewed: Peer Reviewed
• Volume: 432
• Issue: 4
• Pages: 2654-2668
• DOI: https://doi.org/10.1093/mnras/stt520
• Keywords: Methods: statistical; Cosmological parameters; Cosmology: observations, large-scale structure of, Universe
• Public URL: https://hull-repository.worktribe.com/output/590938
• Publisher URL: https://academic.oup.com/mnras/article/432/4/2654/993844
• Contract Date: Jun 29, 2018