The Faint End of the Quasar Luminosity Function at z ~ 4: Implications for Ionization of the Intergalactic Medium and Cosmic Downsizing

@article{Glikman2011TheFE,
  title={The Faint End of the Quasar Luminosity Function at z ~ 4: Implications for Ionization of the Intergalactic Medium and Cosmic Downsizing},
  author={Eilat Glikman and S. George Djorgovski and Daniel Stern and Arjun Dey and B. T. Jannuzi and Kyoung-Soo Lee Yale University and Caltech and Jpl and Noao},
  journal={The Astrophysical Journal},
  year={2011},
  volume={728}
}
We present an updated determination of the z ~ 4 QSO luminosity function (QLF), improving the quality of the determination of the faint end of the QLF presented by Glikman et al. (2010). We have observed an additional 43 candidates from our survey sample, yielding one additional QSO at z = 4.23 and increasing the completeness of our spectroscopic follow-up to 48% for candidates brighter than R = 24 over our survey area of 3.76 deg^2. We study the effect of using K-corrections to compute the… 

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