Constraints on sterile neutrino models from strong gravitational lensing, Milky Way satellites, and Lyman-$\alpha$ forest

Ioana A. Zelko, Tommaso Treu, Kevork N. Abazajian +5

The nature of dark matter is one of the most important unsolved questions in science. Some dark matter candidates do not have sufficient nongravitational interactions to be probed…