Solar reflection of light dark matter

Direct detection experiments are searching for rare interactions between dark matter (DM) particles from the galactic halo and ordinary matter on Earth. If the mass of these dark particles is too low, their kinetic energy does not suffice to trigger terrestrial detectors leaving them incapable to observe DM. Processes that boost DM particles can therefore extend the observational reach of direct DM searches to lower masses. I will discuss the mechanism and phenomenology of solar reflection, where DM particles get accelerated via collisions with solar electrons or nuclei. Compared to standard halo DM, solar reflection not only allows to probe lighter masses, a solar reflection signal would also feature a novel modulation signature.