We find some new exact cosmological solutions for the covariant scalar–tensor–vector gravity theory, the so-called modified gravity (MOG). The exact solution of the vacuum field equations has been derived. Also, for ...

We study the stellar bar growth in high-resolution numerical galaxy models with and without dark matter halos. In all models, the galactic disk is exponential, and the halos are rigid or live Plummer spheres. More specifically, ...

We estimate virial masses of galaxy clusters using the parametrized post-Newtonian (PPN) virial theorem. Also, we show explicitly that post-Newtonian corrections can not address the mass discrepancy in the galaxy clusters.

We study the local and global stability of self-gravitating disks in the context of modified gravity (MOG). MOG is a covariant generalization of general relativity and developed as an alternative for dark matter particles. ...

We study the local and global stability of thin galactic disks in the context of MOG (modified

gravity). In the case of local stability, we show that at large distances from the center, galactic

disks are ...

Using the parametrized post-Newtonian equations of hydrodynamics, the tensor and the scalar form of the parametrized post-Newtonian (PPN) virial theorem are derived. The PPN virial theorem then is used to estimate the ...

We derive the equations of motion of an electrically neutral test particle for modified gravity theories in which the covariant divergence of the ordinary matter energy-momentum tensor dose not vanish (i.e. $\\\\nabla_{\ ...

MOdified Gravity (MOG) is a covariant modification of Einstein's general relativity. This theory is one of the current alternatives to dark matter models. We describe dynamics of collisionless self-gravitating systems in ...

We find the dispersion relation for tightly wound spiral density waves in the surface of rotating, self-gravitating disks in the framework of Modified Gravity (MOG). Also, the Toomre-like stability criterion for differentially ...