TY  -  
T1  - Tracing the accretion history of supermassive black holes through X-ray variability : results from the Chandra Deep Field-South 
SN  -  /  
UR  - http://hdl.handle.net/10138/225100 
T3  -  
A1  - Paolillo, M.; Papadakis, I.; Brandt, W. N.; Luo, B.; Xue, Y. Q.; Tozzi, P.; Shemmer, O.; Allevato, V.; Bauer, F. E.; Comastri, A.; Gilli, R.; Koekemoer, A. M.; Liu, T.; Vignali, C.; Vito, F.; Yang, G.; Wang, J. X.; Zheng, X. C. 
A2  -  
PB  -  
Y1  - 2017 
LA  - eng 
AB  - We study the X-ray variability properties of distant active galactic nuclei (AGNs) in the Chandra Deep Field-South region over 17 yr, up to z similar to 4, and compare them with those predicted by models based on local samples. We use the results of Monte Carlo simulations to account for the biases introduced by the discontinuous sampling and the low-count regime. We confirm that variability is a ubiquitous property of AGNs, with no clear dependence on the density of the environment. The variabi... 
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IS  -  
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OP  -  
KW  - galaxies: active; galaxies: high-redshift; galaxies: nuclei; quasars: supermassive black holes; X-rays: galaxies; ACTIVE GALACTIC NUCLEI; ABSORPTION-LINE VARIABILITY; XMM-NEWTON; MULTIYEAR TIMESCALES; TIME VARIABILITY; COMBINED LONG; LOCKMAN HOLE; GALAXIES; QUASAR; RXTE; 115 Astronomy, Space science 
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ER  -