83 citations · 558 across the 12 of their papers we have counts for
12 papers
ISiTGR: Testing deviations from GR at cosmological scales including dynamical dark energy, massive neutrinos, functional or binned parametrizations, and spatial curvature
Cristhian Garcia-Quintero, Mustapha Ishak, Logan Fox +1
We introduce a new version of the Integrated Software in Testing General Relativity (ISiTGR) which is a patch to the software CAMB and CosmoMC. ISiTGR is intended to test deviation…
Cosmological constraints from galaxy clustering in the presence of massive neutrinos
Matteo Zennaro, Julien Bel, Jason Dossett +2
The clustering ratio is defined as the ratio between the correlation function and the variance of the smoothed overdensity field. In LCDM cosmologies not accounting for massive neu…
Searching for Modified Gravity: Scale and Redshift Dependent Constraints from Galaxy Peculiar Velocities
Andrew Johnson, Chris Blake, Jason Dossett +3
We present measurements of both scale- and time-dependent deviations from the standard gravitational field equations. These late-time modifications are introduced separately for re…
Constraints and tensions in testing general relativity from Planck and CFHTLenS including intrinsic alignment systematics
Jason N. Dossett, Mustapha Ishak, David Parkinson +1
We present constraints on testing general relativity (GR) at cosmological scales using recent data sets and assess the impact of galaxy intrinsic alignment (IA) in the CFHTLenS len…
Effects of Dark Energy Perturbations on Cosmological Tests of General Relativity
Jason Dossett, Mustapha Ishak
Cosmological tests to distinguish between dark energy (DE) and modifications to gravity are a promising route to obtain clues on the origin of cosmic acceleration. We study here th…
Spatial curvature and cosmological tests of general relativity
Jason Dossett, Mustapha Ishak
It is well-known that allowing for spatial curvature affects constraints on cosmological parameters such as the dark energy equation of state parameters. Here we study the effect o…
Testing General Relativity at Cosmological Scales: Implementation and Parameter Correlations
Jason Dossett, Mustapha Ishak, Jacob Moldenhauer
The testing of general relativity at cosmological scales has become a possible and timely endeavor that is not only motivated by the pressing question of cosmic acceleration but al…
Figures of merit and constraints from testing General Relativity using the latest cosmological data sets including refined COSMOS 3D weak lensing
Jason Dossett, Jacob Moldenhauer, Mustapha Ishak
We use cosmological constraints from current data sets and a figure of merit (FoM) approach to probe any deviations from general relativity (GR) at cosmological scales. The FoM app…
Constraints on growth index parameters from current and future observations
Jason Dossett, Mustapha Ishak, Jacob Moldenhauer +2
We use current and future simulated data of the growth rate of large scale structure in combination with data from supernova, BAO, and CMB surface measurements, in order to put con…
Contiguous redshift parameterizations of the growth index
Mustapha Ishak, Jason Dossett
The growth rate of matter perturbations can be used to distinguish between different gravity theories and to distinguish between dark energy and modified gravity at cosmological sc…
More on Lensing by a Cosmological Constant
Mustapha Ishak, Wolfgang Rindler, Jason Dossett
The question of whether or not the cosmological constant affects the bending of light around a concentrated mass has been the subject of some recent papers. We present here a simpl…
A New Independent Limit on the Cosmological Constant/Dark Energy from the Relativistic Bending of Light by Galaxies and Clusters of Galaxies
Mustapha Ishak, Wolfgang Rindler, Jason Dossett +2
We derive new limits on the value of the cosmological constant, , based on the Einstein bending of light by systems where the lens is a distant galaxy or a cluster of galaxies.…