Journal article
Constraining Gravity at Large Scales with the 2MASS Photometric Redshift Catalog and Planck Lensing
Federico Bianchini, Christian L Reichardt
ASTROPHYSICAL JOURNAL | IOP PUBLISHING LTD | Published : 2018
Abstract
We present a new measurement of structure growth at z ≃ 0.08 obtained by correlating the cosmic microwave background (CMB) lensing potential map from the Planck satellite with the angular distribution of the 2MASS Photometric Redshift galaxies. After testing for, and finding no evidence for systematic effects, we calculate the angular auto- and cross-power spectra. We combine these spectra to estimate the amplitude of structure growth using the bias-independent DG estimator introduced by Giannantonio et al. We find that the relative amplitude of DG with respect to the predictions based on Planck cosmology is AD (z = 0.08) = 1.00 ± 0.21, fully consistent with the expectations for the standard..
View full abstractGrants
Awarded by Australian Research Council Future Fellowship
Funding Acknowledgements
We are indebted to Chris Blake and Srinivasan Raghunathan for their careful reading of the draft and for enlightening discussions. We also thank Maciej Bilicki for providing valuable feedback on the manuscript. F.B. and C.R. acknowledge support from an Australian Research Council Future Fellowship (FT150100074). This research has made use of data obtained from the Super-COSMOS Science Archive, prepared and hosted by the Wide Field Astronomy Unit, Institute for Astronomy, University of Edinburgh, which is funded by the UK Science and Technology Facilities Council. This research made use of HEALPix (Gorski et al. 2005), healpy, and the Planck Legacy Archive.