Neutrino flavor conversion alters the lepton-emission self-sustained asymmetry in core-collapse supernovae
The study investigates how neutrino flavor conversion affects a specific asymmetry called Lepton-number Emission Self-sustained Asymmetry (LESA) during a supernova's stalled shock phase. By solving neutrino equations in two dimensions, researchers found that fast flavor instabilities, particularly in the Southern region of the annulus, drive this conversion. This process enhances the LESA dipole by up to 10%, regardless of neutrino mass ordering.