The evolution of the clustering of QSOs

Details The evolution of the clustering of QSOs The evolution of the clustering of QSOs

Jun 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aspc..176..341l&link_type=abstract

Observational Cosmology: The Development of Galaxy Systems, Proceedings of the International Workshop held at Sesto Pusteria, Bo

Astronomy and Astrophysics

Astronomy

1

Scientific paper

The evolution of QSO clustering is investigated with a new sample of 388 QSOs with 0.3 < z <= 2.2, B <= 20.5 and M_B < -23. Evidence is found for an increase of the clustering amplitude with increasing redshift. These measurements allow to further distinguish among 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 ~5 cdot 1012 M_odot.

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