The X-ray/UV ratio in active galactic nuclei: dispersion and variability

Context. The well established negative correlation between the αOX spectral slope and the optical/ultraviolet (UV) luminosity, a by-product of the relation between X-rays and optical/UV luminosity, is affected by relatively large dispersion. The main contributors to this dispersion can be variabilit...

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Veröffentlicht in:	Astronomy and astrophysics (Berlin) 2018-11, Vol.619, p.A95
Hauptverfasser:	Chiaraluce, E., Vagnetti, F., Tombesi, F., Paolillo, M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Active galactic nuclei Banded structure Dependence Dispersion galaxies: active Inclination Indicators Luminosity Order parameters Parameter estimation Physical properties quasars: general Regression analysis Ultraviolet spectra Variability Viewing X ray spectra X-rays X-rays: galaxies XMM (spacecraft)
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