How an improved implementation of H2 self-shielding influences the formation of massive stars and black holes

@article{Hartwig2015HowAI,
  title={How an improved implementation of H2 self-shielding influences the formation of massive stars and black holes},
  author={Tilman Hartwig and Simon C. O. Glover and Ralf S. Klessen and Muhammad A. Latif and Marta Volonteri},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2015},
  volume={452},
  pages={1233-1244}
}
High redshift quasars at z>6 have masses up to ~$10^9$ M$_\odot$. One of the pathways to their formation includes direct collapse of gas, forming a supermassive star, precursor of the black hole seed. The conditions for direct collapse are more easily achievable in metal-free haloes, where atomic hydrogen cooling operates and molecular hydrogen (H2) formation is inhibited by a strong external UV flux. Above a certain value of UV flux (J_crit), the gas in a halo collapses isothermally at ~$10^4… Expand
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