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The cosmological relaxion can address the hierarchy problem, while itscoherent oscillations can constitute dark matter in the present universe. Weconsider the possibility that the relaxion forms gravitationally bound objectsthat we denote as relaxion stars. The density of these stars would be higherthan that of the local dark matter density, resulting in enhanced signals intable-top detectors, among others. Furthermore, we raise the possibility thatthese objects may be trapped by an external gravitational potential, such asthat of the Earth or the Sun. This leads to formation of relaxion halos of evengreater density. We discuss several interesting implications of relaxion halos,as well as detection strategies to probe them.

Relaxion Stars and their detection via Atomic Physics