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Identifying Transitions in Changing-look Active Galactic Nuclei in Light-curve Data with the Zwicky Transient Facility

  • Authors: Margaret E. Verrico, K. Decker French, Vivienne F. Baldassare, Colin J. Burke, Laura Duffy, Nicholas Earl, Megan Harrison, Jason T. Hinkle, Alexander Messick, Samaresh Mondal, Yashasvi Moon, Margaret Shepherd, Zachary Stone

Margaret E. Verrico et al 2026 The Astrophysical Journal 1004 .

  • Provider: AAS Journals

Caption: Figure 10.

Distribution of Eddington ratios (top) and bolometric luminosities (bottom) for the CL-AGN photometric transition candidates (bar graph) and all objects studied in this work (histograms). Median values for each sample are shown with dashed vertical lines. Photometric transitions occur mainly in objects with an Eddington ratio −2 ≲ Log(λEdd) ≲ −1 (measured from the on-state spectrum). A Kolmogorov–Smirnov test finds photometric transition candidates have marginally statistically distinct Eddington ratios from Seyfert 2s (p = 0.051) and Seyfert 1s (p = 0.035), though CL-AGN overall do not (p = 0.17 for Seyfert 2s and p = 0.22 for Seyfert 1s).

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