Astrophysical Objects and New Light Particles

Jean-François Fortin

Université Laval, Québec

We discuss constraints on new light particles, specifically light dark sector particles interacting with the visible sector through dark forces, from white dwarf cooling and supernova energy-loss arguments.  The constraints obtained are complementary to standard constraints from beam-dump experiments, electron-positron colliding experiments, fixed-target experiments, anomalous magnetic moment measurements and rare meson decay measurements.