Gravitational waves have enabled a new way of observing the Universe; however, so far they have only been detected in a narrow range of frequencies. Dark matter makes up most of the matter in the Universe, and yet we still do not know what it is. In this talk, I will discuss two promising avenues for detecting gravitational waves and dark matter with upcoming missions and experiments. First, I'll discuss how we can use upcoming photometric surveys to detect gravitational waves by looking for relative stellar position changes induced by gravitational waves at Earth. These surveys will be sensitive to gravitational waves in a new frequency regime that will be difficult to measure in any other way. Then, I'll discuss how we can use future space-based atom interferometers to probe general dark matter particle models through decoherence and phase effects induced by dark matter scattering. These experiments will be uniquely sensitive to light dark matter models (mx < 10 keV) that are inaccessible to other direct detection methods.

Papers I’ll discuss: https://arxiv.org/abs/2010.02218, https://arxiv.org/abs/2205.07962, https://arxiv.org/abs/2205.13546