Rotation Curves of Galaxies by Fourth Order Gravity

Understand

We investigate the radial behavior of galactic rotation curves by a Fourth Order Gravity adding also the Dark Matter component.

• The Fourth Order Gravity is a Lagrangian containing the Ricci scalar, the Ricci and Riemann tensor, but the rotation curves are depending only on two free parameters.
• A systematic analysis of rotation curves, in the Newtonian Limit of theory, induced by all galactic sub-structures of ordinary matter is shown.
• This analysis is presented for Fourth Order Gravity with and without Dark Matter.