Starfall: A heavy rain of stars in ‘turning on’ AGN

  title={Starfall: A heavy rain of stars in ‘turning on’ AGN},
  author={Barry McKernan and K. E. S. Ford and Michele Cantiello and Matthew J. Graham and Adam S. Jermyn and Nathan W. C. Leigh and Tsuguru Ryu and Daniel Stern},
  journal={Monthly Notices of the Royal Astronomical Society},
As active galactic nuclei (AGN) ‘turn on’, some stars end up embedded in accretion disks around supermassive black holes (SMBHs) on retrograde orbits. Such stars experience strong headwinds, aerodynamic drag, ablation and orbital evolution on short timescales. Loss of orbital angular momentum in the first ∼0.1 Myr of an AGN leads to a heavy rain of stars (‘starfall’) into the inner disk and on to the SMBH. A large AGN loss cone (θAGN, lc) can result from binary scatterings in the inner disk… 

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