The jet emitting disk-standard accretion disk model applied to the active galactic nuclei ultra violet–X-ray correlation

Abstract

The non-linear correlation between the UV and X-ray emission observed in active galactic nuclei remains a puzzling question that challenges accretion models. While the UV emission originates from the cold disk, the X-ray emission is emitted by a hot corona whose physical characteristics and geometry are still highly debated. The jet emitting disk-standard accretion disk (JED-SAD) is a spectral model stemming from self-similar accretion-ejection solutions. It is composed of an inner highly magnetized and hot accretion flow launching jets, the JED, and an outer SAD. The model has been successfully applied to X-ray binaries outbursts. The AGN UV–X-ray correlation represents another essential test for the JED-SAD model. We use multiple AGN samples to explore the parameter space and identify the regions able to reproduce the observations. In this first paper, we show that the JED-SAD model is able to reproduce the UV–X-ray correlation.