Demography of High-Redshift AGN

Figure 1

Stacks of Chandra images at the position of 210 and 77 Bouwens et al. [19] candidate 𝑧∼6-7 galaxies in four energy bands: 0.5–2 keV, 2–7 keV, 0.8–4 keV, and 1.5–5.5 keV.