TNT Colloquium: AXION STARS [Duke]

The particle that makes up the dark matter of the universe could be an extremely light boson called the axion.A significant fraction of the axion dark matter could be in the form of bound Bose-Einstein condensates of axions.The condensates are called "axion stars" if they are bound by gravity and "oscillons" if they are self-bound.There may be aspects of axion dark matter in which the effects of axion stars and oscillons have not been properly taken into account.