Recent work on nearby AGNs has shown that X-ray variability is correlated with the mass and accretion rate onto the central SMBH. Here we present the application of the variability-luminosity relation to high redshift AGNs in the CDFS, making use of XMM-Newton observations. We use Monte Carlo simulations in order to properly account for bias and uncertainties introduced by the sparse sampling and the very low statistics. Our preliminary results indicate that BH masses span over the range 10(5) divided by 10(9)M(circle dot) while accretion rates range from 10(-3) up to > 1 (m) over dot(Edd)
Probing BH mass and accretion through X-ray variability in the CDFS / V., Allevato; C., Pinto; Paolillo, Maurizio; I., Papadakis; P., Ranalli; A., Comastri; K., Iwasawa. - STAMPA. - (2010), pp. 491-492. (Intervento presentato al convegno X-ray Astronomy 2009 tenutosi a Bologna nel 7-11 Sep. 2009) [10.1063/1.3475315].
Probing BH mass and accretion through X-ray variability in the CDFS
PAOLILLO, MAURIZIO;
2010
Abstract
Recent work on nearby AGNs has shown that X-ray variability is correlated with the mass and accretion rate onto the central SMBH. Here we present the application of the variability-luminosity relation to high redshift AGNs in the CDFS, making use of XMM-Newton observations. We use Monte Carlo simulations in order to properly account for bias and uncertainties introduced by the sparse sampling and the very low statistics. Our preliminary results indicate that BH masses span over the range 10(5) divided by 10(9)M(circle dot) while accretion rates range from 10(-3) up to > 1 (m) over dot(Edd)I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
