Fig. 9.
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Distribution of the de-projected transition distances in HEGs, expressed in units of Schwarzschild radii (RS). Data were compiled from Boccardi et al. (2021), Algaba et al. (2019), Traianou et al. (2020), Okino et al. (2022), Burd et al. (2022), Yi et al. (2024), Shang et al. (2025) and also include 3C 452. Narrow-line HEGs (Cygnus A and 3C 452) are plotted in purple, while broad-line HEGs are shown in blue.
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