Cause of Spiral Galaxy Rotation Rates: a Massive Graviton
arXiv:1110.3697 · doi:10.1088/2041-8205/741/2/L31
Abstract
We attribute the observed rotational velocity profiles of spiral galaxy disks to a combination of Newtonian and exponential gravitational potentials. We offer a novel, yet perfectly plausible, Lagrangian from which the exponential potential is derived. The exponential potential is defined by two universal constants (corresponding to a coupling constant and a graviton mass) that we determine from our sample of 12 THINGS disks. All velocity profile fits are excellent.
Accepted for publication in ApJ Letters
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