activity
19942025
most citedGalaxy Rotation Curves Without Non-Baryonic Dark Matter

321 citations · 1.5k across the 18 of their papers we have counts for

collaborators

14 papers

astro-ph.CO2025

Dynamical Dark Energy at Late Time CDM

J. W. Moffat, E. J. Thompson

We investigate the dynamical properties of dark energy through a detailed analysis of its equation of state parameter as a function of redshift. We derive a general expressi…

astro-ph.GA2024

Galaxy Formation in the Early Universe

J. W. Moffat

Recent observations by the James Webb Space Telescope (JWST) have revealed the presence of bright and well-formed galaxies at high redshifts, challenging the predictions of the sta…

gr-qc2018★ 37 cited

Propagation of Electromagnetic Waves in MOG: Gravitational Lensing

S. Rahvar, J. W. Moffat

We investigate the solution of Maxwell's equations in curved spacetime within the framework of Modified Gravity (MOG). We show that besides the null-geodesic treatment of photons i…

astro-ph.CO2014★ 41 cited

Variable Speed of Light Cosmology, Primordial Fluctuations and Gravitational Waves

J. W. Moffat

A variable speed of light (VSL) cosmology is described in which the causal mechanism of generating primordial perturbations is achieved by varying the speed of light in a primordia…

astro-ph.CO2013★ 144 cited

The MOG Weak Field approximation II. Observational test of Chandra X-ray Clusters

J. W. Moffat, S. Rahvar

We apply the weak field approximation limit of the covariant Scalar-Tensor-Vector Gravity (STVG) theory, so-called MOdified gravity (MOG), to the dynamics of clusters of galaxies b…

astro-ph.GA2013★ 212 cited

The MOG weak field approximation and observational test of galaxy rotation curves

J. W. Moffat, S. Rahvar

As an alternative to dark matter models, MOdified Gravity (MOG) theory can compensate for dark matter by a covariant modification of Einstein gravity. The theory introduces two add…