Remote talk
Small-scale dark matter structures lighter than a billion solar masses are an important probe of primordial density fluctuations and dark matter microphysics. Due to their lack of starlight emission, their only guaranteed signatures are gravitational in nature. A promising strategy to look for compact dark matter subhalos in the Milky Way is through their astrometric weak lensing effects on the motion of background luminous sources. I will present results of a search for correlated imprints of time-domain lensing on stellar proper motions using the latest Gaia data release. Additionally, I will forecast the sensitivity of a similar approach based on proper accelerations that can be applied on the next data release. Analogous techniques can be used to look for collective star-lensing events that should enable average stellar mass measurements using forthcoming data.
