TY - JOUR
T1 - Thewigglez dark energy survey
T2 - Constraining galaxy bias and cosmic growth with three-point correlation functions
AU - Marín, Felipe A.
AU - Blake, Chris
AU - Poole, Gregory B.
AU - McBride, Cameron K.
AU - Brough, Sarah
AU - Colless, Matthew
AU - Contreras, Carlos
AU - Couch, Warrick
AU - Croton, Darren J.
AU - Croom, Scott
AU - Davis, Tamara
AU - Drinkwater, Michael J.
AU - Forster, Karl
AU - Gilbank, David
AU - Gladders, Mike
AU - Glazebrook, Karl
AU - Jelliffe, Ben
AU - Jurek, Russell J.
AU - Li, I. hui
AU - Madore, Barry
AU - Martin, D. Christopher
AU - Pimbblet, Kevin
AU - Pracy, Michael
AU - Sharp, Rob
AU - Wisnioski, Emily
AU - Woods, David
AU - Wyder, Ted K.
AU - Yee, H. K.C.
PY - 2013/10
Y1 - 2013/10
N2 - 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 σ8(z), the variance of perturbations on a scale of 8 h-1 Mpc and its evolution with redshift. These measurements of σ8(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.
AB - 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 σ8(z), the variance of perturbations on a scale of 8 h-1 Mpc and its evolution with redshift. These measurements of σ8(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.
KW - Methods
KW - Observations - large-scale structure of - Universe
KW - Statistical - cosmological parameters - cosmology
UR - http://www.scopus.com/inward/record.url?scp=84880022878&partnerID=8YFLogxK
U2 - 10.1093/mnras/stt520
DO - 10.1093/mnras/stt520
M3 - Article
SN - 0035-8711
VL - 432
SP - 2654
EP - 2668
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 4
ER -