  In the era of gravitational waves physics, when detections of wave fronts are
increasing in number, sensibility, frequencies and distances, gravitational
physics has entered a period of maximum activity and brilliance. This has open
a new window where General Relativity can be challenged in both weak as
strong-field regimes. In this paper, we focus on the analysis of gravitational
waves propagation and emission in the weak-field regime for gravitational
theories within the Palatini formalism. Our results show that gravitational
waves propagation in vacuum matches General Relativity predictions as well as
the multipolar expansion when considering weak sources, independently of the
form of the gravitational action.
