X-ray variability of SDSS J000532.84+200717.4: from a normal state to an X-weak state

Xiaohui Yang, Yanli Ai, Liming Dou +8

We present a multi-epoch study of the extreme X-ray variability of the type~1 quasar SDSS~J000532.84+200717.4 using archival observations from \textit{XMM-Newton}, \textit{Swift}/X…