5 AGNs soft excess and X-ray continuum

Changing-state active galactic nuclei (CSAGNs) exhibit rapid variability, with mass accretion rates that can change by several orders of magnitude in a few years. This provides...变态活动星系核（Changing-state active galactic nuclei，CSAGNs）呈现快速变异性，其物质吸积率可在数年之内变化数个数量级。这为……