The Dynamics of the Formation of Degenerate Heavy Neutrino Stars
  Through reformulating the cold, self-gravitating fermion gas as a Bose condensate by identifying their mutual Thomas-Fermi limits, the dissipationless formation of a heavy neutrino star in gravitational collapse is numerically demonstrated. Such stars offer an alternative to supermassive black holes for the compact dark objects at the centers of galaxies. 
Neven Bilic, Robert J. Lindebaum, Gary B. Tupper and Raoul D. Viollier