78 citations · 139 across the 6 of their papers we have counts for
6 papers
Testing the theory of gravity with DESI: estimators, predictions and simulation requirements
Shadab Alam, Christian Arnold, Alejandro Aviles +33
Shortly after its discovery, General Relativity (GR) was applied to predict the behavior of our Universe on the largest scales, and later became the foundation of modern cosmology.…
Deriving galaxy cluster velocity anisotropy profiles from a joint analysis of dynamical and weak lensing data
Alejo Stark, Christopher J. Miller, Vitali Halenka
We present an analytic approach to lift the mass-anisotropy degeneracy in clusters of galaxies by utilizing the line-of-sight velocity dispersion of clustered galaxies jointly with…
Inferring Gravitational Potentials from Mass Densities in Cluster-sized Halos
Christopher J. Miller, Alejo Stark, Daniel Gifford +1
We use N-body simulations to quantify how the escape velocity in cluster-sized halos maps to the gravitational potential in a LambdaCDM universe. Using spherical density-potential…
On Escaping a Galaxy Cluster in an Accelerating Universe
Alejo Stark, Christopher J. Miller, Daniel Gifford
We derive the escape velocity profile for an Einasto density field in an accelerating universe and demonstrate its physical viability by comparing theoretical expectations to both…
Cosmology with Galaxy Cluster Phase Spaces
Alejo Stark, Christopher J. Miller, Dragan Huterer
We present a novel approach to constrain accelerating cosmologies with galaxy cluster phase spaces. With the Fisher matrix formalism we forecast constraints on the cosmological par…
Probing Theories of Gravity with Phase Space-Inferred Potentials of Galaxy Clusters
Alejo Stark, Christopher J. Miller, Nicholas Kern +5
Modified theories of gravity provide us with a unique opportunity to generate innovative tests of gravity. In Chameleon f(R) gravity, the gravitational potential differs from the w…