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Transient obscuration event captured in NGC~3227 II. Warm absorbers and obscuration events in archival XMM-Newton and NuSTAR observations
Yijun Wang, Jelle Kaastra, Missagh Mehdipour +18
The relation between warm absorber (WA) outflows of AGN and nuclear obscuration activities caused by optically-thick clouds (obscurers) crossing the line of sight is unclear. NGC 3…
The Great Slump: Mrk926 reveals discrete and varying Balmer line satellite components during a drastic phase of decline
Wolfram Kollatschny, Martin W. Ochmann, Shai Kaspi +9
Mrk926 is known to be a highly variable AGN with very broad line profiles. We studied the continuum and line profile variations of this object with high temporal resolution in orde…
The PG-RQS survey. Building the radio spectral distribution of radio-quiet quasars. I. The 45-GHz data
R. D. Baldi, A. Laor, E. Behar +4
The origin of the radio emission in radio-quiet quasars (RQQs) remains unclear. Radio emission may be produced by a scaled-down version of the relativistic jets observed in radio-l…