The evolution of QSO clustering is investigated with a new sample of 388 QSOs with 0.3 < z <= 2.2, B <= 20.5 and MB < -23. Evidence is found for an increase of the clustering amplitude with increasing redshift. These measurements allow us to further distinguish between the various physical scenarios proposed to interpret the QSO phenomenon. A single population model is inconsistent with the observations. The general properties of the QSO population would arise naturally if quasars are short-lived events connected to a characteristic halo mass of ~5 times 1012 Modot.
LA FRANCA, F., Andreani, P., Cristiani, S. (1999). The Evolution of the Clustering of QSOs. In Looking Deep in the Southern Sky (pp.216). BERLIN HEIDELBERG : Springer-Verlag.
The Evolution of the Clustering of QSOs
LA FRANCA, Fabio;
1999-01-01
Abstract
The evolution of QSO clustering is investigated with a new sample of 388 QSOs with 0.3 < z <= 2.2, B <= 20.5 and MB < -23. Evidence is found for an increase of the clustering amplitude with increasing redshift. These measurements allow us to further distinguish between the various physical scenarios proposed to interpret the QSO phenomenon. A single population model is inconsistent with the observations. The general properties of the QSO population would arise naturally if quasars are short-lived events connected to a characteristic halo mass of ~5 times 1012 Modot.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
