The Relation between X-ray and Ultraviolet Variability of Quasars

• Published in: arXiv.org
• Main Authors: Sou, Hao, Jun-Xian, Wang, Zhang-Liang, Xie, Wen-Yong, Kang, Zhen-Yi Cai
• Format: Paper Journal Article
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 14.04.2022
• Subjects: Active galactic nuclei; Brightening; Deposition; Dimming; Physical properties; Physics - Astrophysics of Galaxies; Physics - High Energy Astrophysical Phenomena; Quasars; Reprocessing; Switches; Time lag; Variability; XMM (spacecraft)

The relation between X-ray and UV/optical variability in AGNs has been explored in many individual sources, however a large sample study is yet absent. Through matching the XMM-Newton serendipitous X-ray and UV source catalogs with SDSS quasars, we build a sample of 802 epoch-pairs of 525 quasars sh...