Mysterious Radio Signals from Space Are Much Better Test of Einstein's General Relativity (IMAGE)

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Mysterious Radio Signals from Space Are Much Better Test of Einstein's General Relativity

Caption

This illustration shows how two photons, one at a high frequency (nu_h) and another at a low frequency (nu_l), travel in curved space-time from their origin in a distant Fast Radio Burst (FRB) source until reaching the Earth. A lower-limit estimate of the gravitational pull that the photons experience along their way is given by the mass in the center of the Milky Way Galaxy.

Credit

Purple Mountain Observatory, Chinese Academy of Sciences

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