Dark Matter Science in the Era of LSST

Understand

Astrophysical observations currently provide the only robust, empirical measurements of dark matter.

• In the coming decade, astrophysical observations will guide other experimental efforts, while simultaneously probing unique regions of dark matter parameter space.
• This white paper summarizes astrophysical observations that can constrain the fundamental physics of dark matter in the era of LSST.
• We describe how astrophysical observations will inform our understanding of the fundamental properties of dark matter, such as particle mass, self-interaction strength, non-gravitational interactions with the Standard Model, and compact object abundances.