09 Jul 2020
This paper presents a physical mechanism for multiple changing-look Active Galactic Nuclei (AGN) outbursts, suggesting they are caused by a radiation pressure instability localized to a narrow zone at the transition between a standard accretion disk and an inner Advection-Dominated Accretion Flow (ADAF). The model can reproduce observed multi-year to sub-day timescales and large luminosity changes through the irradiation of the outer disk.
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