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Highly variable AGN from the<i>XMM-Newton</i>slew survey

Highly variable AGN from the<i>XMM-Newton</i>slew survey

We investigate the properties of a variability-selected complete sample of AGN in order to identify the mechanisms which cause large amplitude X-ray variability on time scales of years. A complete sample of 24 sources was constructed, from AGN which changed their soft X-ray luminosity by more than one order of …