70 citations · 331 across the 14 of their papers we have counts for
9 papers · 1 filter
Is quasar variability regulated by the close environment of accretion?
Liang Wu, Jun-Xian Wang, Wen-Ke Ren +1
UV/optical variability in quasars is a well-observed phenomenon, yet its primeval origins remain unclear. This study investigates whether the accretion disk turbulence, which is re…
A surprising excess of radio emission in extremely stable quasars: a unique clue to jet launching?
Wen-Yong Kang, Jun-Xian Wang, Zhen-Yi Cai +6
Quasars are generally divided into jetted radio-loud and non-jetted radio-quiet ones, but why only 10% quasars are radio loud has been puzzling for decades. Other than jet-induced-…
The Relation between X-ray and Ultraviolet Variability of Quasars
Hao Sou, Jun-Xian Wang, Zhang-Liang Xie +2
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-New…
Exploring the Connection between UV/Optical Variations and Radio Emission in Radio-Quiet Quasars: Clues on Radio Emission Origin
Mai Liao, Junxian Wang, Wenyong Kang +1
The radio emission in radio-quiet quasars (RQQs) has been a long mystery and its physical origin remains unclear. In a previous work we find UV/optical more variable quasars have s…
More variable quasars have stronger emission lines
Wen-Yong Kang, Jun-Xian Wang, Zhen-Yi Cai +1
The UV/optical variation, likely driven by accretion disc turbulence, is a defining characteristic of type 1 active galactic nuclei (AGNs) and quasars. In this work we investigate…
A Lyman-α protocluster at redshift 6.9
Weida Hu, Junxian Wang, Leopoldo Infante +21
Protoclusters, the progenitors of the most massive structures in the Universe, have been identified at redshifts of up to 6.6. Besides exploring early structure formation, searchin…