The Low-Redshift Lyα Forest in Cold Dark Matter Cosmologies

@article{Dav1998TheLL,
  title={The Low-Redshift Ly$\alpha$ Forest in Cold Dark Matter Cosmologies},
  author={Romeel Dav{\'e} and Lars Hernquist and Neal Katz and David H. Weinberg},
  journal={The Astrophysical Journal},
  year={1998},
  volume={511},
  pages={521-545}
}
We study the physical origin of the low-redshift Lyα forest in hydrodynamic simulations of four cosmological models, all variants of the cold dark matter scenario. Our most important conclusions are insensitive to the cosmological model, but they depend on our assumption that the UV background declines at low redshift in concert with the declining population of quasar sources. We find that the expansion of the universe drives rapid evolution of dN/dz (the number of absorbers per unit redshift… 
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