Discovery of a radio galaxy at z = 5.72

@article{Saxena2018DiscoveryOA,
  title={Discovery of a radio galaxy at z = 5.72},
  author={A. Saxena and M. Marinello and R. Overzier and P. Best and H. Rottgering and K. Duncan and I. Prandoni and L. Pentericci and M. Magliocchetti and D. Paris and F. Cusano and F. Marchi and H. Intema and G. Miley},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2018},
  volume={480},
  pages={2733-2742}
}
We report the discovery of the most distant radio galaxy to date, TGSS1530 at a redshift of $z=5.72$ close to the presumed end of the Epoch of Reionisation. The radio galaxy was selected from the TGSS ADR1 survey at 150 MHz for having to an ultra-steep spectral index, $\alpha^{\textrm{150 MHz}}_{\textrm{1.4 GHz}} = -1.4$ and a compact morphology obtained using VLA imaging at 1.4 GHz. No optical or infrared counterparts for it were found in publicly available sky surveys. Follow-up optical… Expand
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