Bounding the mass of the graviton using binary pulsar observations

The close agreement between the predictions of dynamical general relativity for the radiated power of a compact binary system and the observed orbital decay of the binary pulsars PSR B1913+16 and PSR B1534+12 allows us to bound the graviton mass to be less than $7.6\times {10}^{-20}\hspace{0.5em}\mathrm{eV}{/c}^2$ with 90% confidence. This bound is the first to be obtained from dynamic as opposed to static field relativity. The resulting limit on the graviton mass is within two orders of magnitude of that from solar system measurements, and can be expected to improve with further observations.