Galactic rotation curves in conformal gravity

Understand

We review some recent work by Mannheim and O'Brien on the systematics of galactic rotation curves in the conformal gravity theory.

• In this work the conformal theory was applied to a comprehensive, high quality sample of spiral galaxies whose rotation curves extend well beyond the galactic optical disks.
• On galactic scales the conformal gravitational theory departs from the standard Newtonian theory in two distinct ways.
• One is a local way in which local matter sources within galaxies generate not just Newtonian potentials but linear potentials as well.