Evidence of a diffuse, extended continuum source in quasars from the relative sizes of the broad line region and the UV-optical continuum source measured with microlensing

Open Access

Fig. 5.

BLR half-light radius as a function of the continuum source half-light radius. C IV, Mg II, and Hα are illustrated in blue, green, and red, respectively. The additional small black squares show the RM measurements considered by Netzer (2022). The dashed line represents the Wang et al. (2023) relation, log₁₀(r_1/2 BLR) = 0.759 (log₁₀(r_1/2 Cont)−ρ)+1.434, with ρ = 0.8 instead of 0.5.

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