|  | 
	
		|  |  
		| Paper: | On the Fraction of X-ray Obscured Quasars |  
		| Volume: | 373, The Central Engine of Active Galactic Nuclei |  
		| Page: | 471 |  
		| Authors: | Wang, J.; Jiang, P.; Zheng, Z.; Wang, T. |  
		| Abstract: | Various studies have claimed that the fraction of obscured AGN drops with luminosity, but contrary results are also reported. We present our recent study on the fraction of X-ray obscured quasars in Chandra Deep Fields and in the local universe showing that most quasars in CDF-S (at redshift of 1 to 4) are obscured, consistent with the pattern in the local universe. |  
		|  |  
		|  |  |  |