Author(s): Jun-Jie Wei, He Gao, Xue-Feng Wu, and Peter Mészáros
Time delays between correlated photons emitted from fast radio bursts induced by the gravitational potential of the Milky Way provide the most accurate tests of Einstein’s equivalence principle to date.
[Phys. Rev. Lett. 115, 261101] Published Wed Dec 23, 2015