Fig. 15.
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log λEdd as a function of redshift. The gray 2D histogram represents the number density of SDSS quasars (Shen et al. 2011). Red stars and blue squares denote eFEDS-DOGs and BluDOG-like eFEDS-DOGs, respectively. Orange, green, purple, cyan, pink, and lime green hexagons denote BluDOGs (Noboriguchi et al. 2022), extremely red quasars (ERQs: Perrotta et al. 2019), hot DOGs (Wu et al. 2018), DOGs (Melbourne et al. 2011), X-ray detected DOGs (Kayal & Singh 2024), and CT DOG (Toba et al. 2020), respectively.
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