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Exploratory X-ray Monitoring of Luminous Radio-Quiet Quasars at High Redshift: No Evidence for Evolution in X-ray Variability
Ohad Shemmer, W. N. Brandt, Maurizio Paolillo +4
We report on the second installment of an X-ray monitoring project of seven luminous radio-quiet quasars (RQQs). New {\sl Chandra} observations of four of these, at $4.10\leq z\leq…
Black-Hole Growth is Mainly Linked to Host-Galaxy Stellar Mass rather than Star Formation Rate
G. Yang, C. -T. J. Chen, F. Vito +14
We investigate the dependence of black-hole accretion rate (BHAR) on host-galaxy star formation rate (SFR) and stellar mass () in the CANDELS/GOODS-South field in the redshift…
Observational constraints on the specific accretion-rate distribution of X-ray selected AGN
A. Georgakakis, J. Aird, A. Schulze +5
This paper estimates the specific accretion-rate distribution of AGN using a sample of 4821 X-ray sources from both deep and shallow surveys. The specific accretion-rate distributi…