The cosmic evolution of Fermi BL Lacertae objects

  title={The cosmic evolution of Fermi BL Lacertae objects},
  author={Marco Ajello and Roger W. Romani and Dario Gasparrini and Michael S. Shaw and J. Bolmer and Garret Cotter and Justin D. Finke and J. Greiner and Stephen E. Healey and Oliver G. King and Walter Max-Moerbeck and P. F. Michelson and William J Potter and Arne Rau and Anthony C. S. Readhead and Joseph L. Richards and Patricia Schady},
  journal={The Astrophysical Journal},
Fermi has provided the largest sample of γ-ray-selected blazars to date. In this work we use a uniformly selected set of 211 BL Lacertae (BL Lac) objects detected by Fermi during its first year of operation. We obtained redshift constraints for 206 out of the 211 BL Lac objects in our sample, making it the largest and most complete sample of BL Lac objects available in the literature. We use this sample to determine the luminosity function of BL Lac objects and its evolution with cosmic time… 
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