Axion Stars

by Eric Braaten (Ohio State)


The particle that makes up the dark matter of the universe could be an 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 fully taken into account.

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