Understanding black hole mass assembly via accretion and mergers at late times in cosmological simulations

  title={Understanding black hole mass assembly via accretion and mergers at late times in cosmological simulations},
  author={Andrea Kulier and Jeremiah P. Ostriker and Priyamvada Natarajan and Claire Lackner and Renyue Cen},
  journal={The Astrophysical Journal},
Accretion is thought to primarily contribute to the mass accumulation history of supermassive black holes (SMBHs) throughout cosmic time. While this may be true at high redshifts, at lower redshifts and for the most massive black holes (BHs) mergers themselves might add significantly to the mass budget. We explore this in two disparate environments—a massive cluster and a void region. We evolve SMBHs from 4 > z > 0 using merger trees derived from hydrodynamical cosmological simulations of these… 

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