CONICET | Buscador de Institutos y Recursos Humanos

Binary pulsars can be excellent probes of ultra-light dark matter. We consider the scenario where the latter is represented by a spin-2 field. The coherent oscillations of the dark matter field perturb the dynamics of binary systems, leading to secular effects for masses that resonate with the binary systems. For the range ( 10^{-23} )~eV~(lesssim m lesssim 10^{-17} )~eV we show that current timing data could potentially constrain the universal coupling strength of dark matter to ordinary matter at the level of ( al simeq 10^{-5} ).