  As a supernova shock expands into space, it may collide with dark matter
particles, scattering them up to velocities more than an order of magnitude
larger than typical dark matter velocities in the Milky Way. If a supernova
remnant is close enough to Earth, and the appropriate age, this flux of
high-velocity dark matter could be detectable in direct detection experiments,
particularly if the dark matter interacts via a velocity-dependent operator.
This could make it easier to detect light dark matter that would otherwise have
too little energy to be detected. We show that the Monogem Ring supernova
remnant is both close enough and the correct age to produce such a flux, and
thus we produce novel direct detection constraints and sensitivities for future
experiments.
