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47 papers · 2 filters
First test of Verlinde's theory of Emergent Gravity using Weak Gravitational Lensing measurements
Margot M. Brouwer, Manus R. Visser, Andrej Dvornik +19
Verlinde (2016) proposed that the observed excess gravity in galaxies and clusters is the consequence of Emergent Gravity (EG). In this theory the standard gravitational laws are m…
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: constraining modified gravity
Eva-Maria Mueller, Will Percival, Eric Linder +4
We use baryon acoustic oscillation and redshift space distortion from the completed Baryon Oscillation Spectroscopic Survey, corresponding to data release 12 of the Sloan Digital S…
Galaxy and Mass Assembly (GAMA): halo formation times and halo assembly bias on the cosmic web
Rita Tojeiro, Elizabeth Eardley, John A. Peacock +10
We present evidence for halo assembly bias as a function of geometric environment. By classifying GAMA galaxy groups as residing in voids, sheets, filaments or knots using a tidal…
The VIMOS Public Extragalactic Redshift Survey (VIPERS). Gravity test from the combination of redshift-space distortions and galaxy-galaxy lensing at
S. de la Torre, E. Jullo, C. Giocoli +39
We carry out a joint analysis of redshift-space distortions and galaxy-galaxy lensing, with the aim of measuring the growth rate of structure; this is a key quantity for understand…
Flat-Sky Pseudo-Cls Analysis for Weak Gravitational Lensing
Marika Asgari, Andy Taylor, Benjamin Joachimi +1
We investigate the use of estimators of weak lensing power spectra based on a flat-sky implementation of the Pseudo-Cl (PCl) technique, where the masked shear field is transformed…
Characterising the optical properties of galaxy clusters with GMPhoRCC
R. J. Hood, R. G. Mann
We introduce the Gaussian Mixture full Photometric Red sequence Cluster Characteriser (GMPhoRCC), an algorithm for determining the redshift and richness of a galaxy cluster candida…