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Fig. 3


Left panel: ionized hydrogen fraction x(z) for (1) a star-forming galaxy source (Robertson et al. 2013) (solid line); (2) galaxies plus AGN with λEdd = 1.0 and Γ = 2.5 (long-dashed line); and (3) galaxies plus AGN with λEdd = 1.0 and Γ = 1.7 (dotted line). All three cases show reionization ending around z ~ 6. Right panel: percent difference in the ionization fraction between each AGN case and the galaxy case as a function of redshift. In the ideal case, there is a maximum 14% increase in x near the end of reionization.

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