189 citations · 1.5k across the 20 of their papers we have counts for
20 papers
Void Lensing as a Test of Gravity
Tessa Baker, Joseph Clampitt, Bhuvnesh Jain +1
We investigate the potential of weak lensing by voids to test for deviations from General Relativity. We calculate the expected lensing signal of a scalar field with derivative cou…
Density split statistics: Cosmological constraints from counts and lensing in cells in DES Y1 and SDSS data
D. Gruen, O. Friedrich, E. Krause +93
We derive cosmological constraints from the probability distribution function (PDF) of evolved large-scale matter density fluctuations. We do this by splitting lines of sight by de…
The ellipticity of galaxy cluster halos from satellite galaxies and weak lensing
Tae-hyeon Shin, Joseph Clampitt, Bhuvnesh Jain +4
We study the ellipticity of galaxy cluster halos as characterized by the distribution of cluster galaxies and as measured with weak lensing. We use monte-carlo simulations of ellip…
Weak-lensing mass calibration of redMaPPer galaxy clusters in Dark Energy Survey Science Verification data
P. Melchior, D. Gruen, T. McClintock +78
We use weak-lensing shear measurements to determine the mean mass of optically selected galaxy clusters in Dark Energy Survey Science Verification data. In a blinded analysis, we s…
Observing dynamical friction in galaxy clusters
Susmita Adhikari, Neal Dalal, Joseph Clampitt
We present a novel method to detect the effects of dynamical friction in observed galaxy clusters. Following accretion into clusters, massive satellite galaxies will backsplash to…
Tidal stripping as a test of satellite quenching in redMaPPer clusters
Yuedong Fang, Joseph Clampitt, Neal Dalal +4
When dark matter halos are accreted by massive host clusters, strong gravitational tidal forces begin stripping mass from the accreted subhalos. This stripping eventually removes a…
Cosmic Voids and Void Lensing in the Dark Energy Survey Science Verification Data
C. Sánchez, J. Clampitt, A. Kovacs +69
Galaxies and their dark matter halos populate a complicated filamentary network around large, nearly empty regions known as cosmic voids. Cosmic voids are usually identified in spe…
Cosmology from large scale galaxy clustering and galaxy-galaxy lensing with Dark Energy Survey Science Verification data
Juliana Kwan, Carles Sanchez, Joseph Clampitt +80
We present cosmological constraints from the Dark Energy Survey (DES) using a combined analysis of angular clustering of red galaxies and their cross-correlation with weak gravitat…
Galaxy-Galaxy Lensing in the DES Science Verification Data
J. Clampitt, C. Sánchez, J. Kwan +73
We present galaxy-galaxy lensing results from 139 square degrees of Dark Energy Survey (DES) Science Verification (SV) data. Our lens sample consists of red galaxies, known as redM…
Joint Measurement of Lensing-Galaxy Correlations Using SPT and DES SV Data
E. J. Baxter, J. Clampitt, T. Giannantonio +75
We measure the correlation of galaxy lensing and cosmic microwave background lensing with a set of galaxies expected to trace the matter density field. The measurements are perform…
Clustering and Bias Measurements of SDSS Voids
Joseph Clampitt, Bhuvnesh Jain, Carles Sánchez
Using a void catalog from the SDSS survey, we present the first measurements of void clustering and the corresponding void bias. Over the range 30-200 Mpc/h the void auto-correlati…
The DES Science Verification Weak Lensing Shear Catalogues
M. Jarvis, E. Sheldon, J. Zuntz +92
We present weak lensing shear catalogues for 139 square degrees of data taken during the Science Verification (SV) time for the new Dark Energy Camera (DECam) being used for the Da…
Joint Analysis of Galaxy-Galaxy Lensing and Galaxy Clustering: Methodology and Forecasts for DES
Y. Park, E. Krause, S. Dodelson +68
The joint analysis of galaxy-galaxy lensing and galaxy clustering is a promising method for inferring the growth function of large scale structure. This analysis will be carried ou…
Lensing Measurements of the Ellipticity of LRG Dark Matter Halos
Joseph Clampitt, Bhuvnesh Jain
Lensing measurements of the shapes of dark matter halos can provide tests of gravity theories and possible dark matter interactions. We measure the quadrupole weak lensing signal f…
Voids in Modified Gravity Reloaded: Eulerian Void Assignment
Tsz Yan Lam, Joseph Clampitt, Yan-Chuan Cai +1
We revisit the excursion set approach to calculate void abundances in chameleon-type modified gravity theories, which was previously studied by Clampitt, Cai and Li (2013). We focu…
Mass and galaxy distributions of four massive galaxy clusters from Dark Energy Survey Science Verification data
P. Melchior, E. Suchyta, E. Huff +89
We measure the weak-lensing masses and galaxy distributions of four massive galaxy clusters observed during the Science Verification phase of the Dark Energy Survey. This pathfinde…
Lensing Measurements of the Mass Distribution in SDSS Voids
Joseph Clampitt, Bhuvnesh Jain
We measure weak lensing mass profiles of voids from a volume-limited sample of SDSS Luminous Red Galaxies (LRGs). We find voids using an algorithm designed to maximize the lensing…
Detection of Stacked Filament Lensing Between SDSS Luminous Red Galaxies
Joseph Clampitt, Hironao Miyatake, Bhuvnesh Jain +1
We search for the lensing signal of massive filaments between 135,000 pairs of Luminous Red Galaxies (LRGs) from the Sloan Digital Sky Survey. We develop a new estimator that clean…
Voids in Modified Gravity: Excursion Set Predictions
Joseph Clampitt, Yan-Chuan Cai, Baojiu Li
We investigate the behavior of the fifth force in voids in chameleon models using the spherical collapse method. Contrary to Newtonian gravity, we find the fifth force is repulsive…
Halo Scale Predictions of Symmetron Modified Gravity
Joseph Clampitt, Bhuvnesh Jain, Justin Khoury
We offer predictions of symmetron modified gravity in the neighborhood of realistic dark matter halos. The predictions for the fifth force are obtained by solving the nonlinear sym…