Dark Matter from Monogem

TL;DR

This paper explores how supernova remnants like Monogem can accelerate dark matter particles to detectable velocities, potentially improving detection prospects for light dark matter in direct detection experiments.

Contribution

It introduces a novel mechanism where supernova shocks produce high-velocity dark matter fluxes, providing new constraints and sensitivities for detection.

Findings

Monogem supernova remnant can produce detectable high-velocity dark matter fluxes.

New direct detection constraints are derived for dark matter interactions.

Potential for improved detection of light dark matter particles.

Abstract

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.