Moffat MOdified Gravity(MOG) / Scalar Tensor Vector Gravity (STVG)

Abstract: Scalar Tensor Vector Gravity / MOG is a metric theory of gravity with dynamical scalar fields and a massive vector field introduced in addition to the metric tensor. In the weak field approximation MOG modifies the Newtonian acceleration with a Yukawa like repulsive term due to Maxwell-Proca type Lagrangian. This associates matter with a fifth force and a modified equation of motion. MOG has been successful in explaining galaxy rotation curves, gravitational lensing, cosmological observations and all other solar system observation without the need of dark matter. In this talk I will discuss the key concepts of MOG theory. Then I will discuss existing observational bounds on STVG weak field parameters. In particular I will present the results obtained from X-COP sample of galaxy clusters.

astrophysicscondensed mattergeneral relativity and quantum cosmologyhigh energy physicsmathematical physicsclassical physicsgeneral physics

Audience: researchers in the topic

Theoretical physics seminar @ Tartu