The Cooling of Compact Objects Through Novel Gauge Bosons

Stars can be used as laboratories of fundamental physics. The emission of feebly interacting particles, which can be produced in stellar cores and leave without further interactions, results in an energy-loss channel. White dwarfs represent the final state of stars with small initial masses. As they have no nuclear energy sources, their evolution is determined by cooling processes, dominated in the hottest phase by neutrino emission through plasmon decay. Novel gauge bosons beyond the Standard Model (SM) of particle physics, motivated, for example, by the measurement of the muon anomalous magnetic dipole moment, can couple to neutrinos and accelerate the cooling of white dwarfs. The final goal is to obtain state-of-the-art constraints from white dwarf cooling on new interactions.