An 800-million-solar-mass black hole in a significantly neutral Universe at a redshift of 7.5

@article{Baados2018An8B,
  title={An 800-million-solar-mass black hole in a significantly neutral Universe at a redshift of 7.5},
  author={E. Ba{\~n}ados and B. Venemans and C. Mazzucchelli and E. Farina and F. Walter and F. Wang and R. Decarli and D. Stern and Xiaohui Fan and F. Davies and J. Hennawi and R. Simcoe and M. Turner and H. Rix and Jinyi Yang and D. Kelson and G. Rudie and J. Winters},
  journal={Nature},
  year={2018},
  volume={553},
  pages={473-476}
}
Quasars are the most luminous non-transient objects known and as a result they enable studies of the Universe at the earliest cosmic epochs. Despite extensive efforts, however, the quasar ULAS J1120 + 0641 at redshift z = 7.09 has remained the only one known at z > 7 for more than half a decade. Here we report observations of the quasar ULAS J134208.10 + 092838.61 (hereafter J1342 + 0928) at redshift z = 7.54. This quasar has a bolometric luminosity of 4 × 1013 times the luminosity of the Sun… Expand
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