Deep Blazar Surveys

Abstract

I address the need for deep blazar surveys by showing that our current understanding of blazars is based on a relatively small number of intrinsically luminous sources. I then review the on-going deeper surveys, addressing in particular their limits and limitations. Finally, I present some preliminary results on the evolutionary properties of faint blazars as derived from the Deep X-ray Radio Blazar Survey (DXRBS).

13 pages, 4 figures. Self-invited talk at the Workshop "Blazar Demographics and Physics", Baltimore, July 2000, ASP Conf. Series, P. Padovani and C. M. Urry eds., in press. Postscript file also available at http://www.stsci.edu/~padovani/survey.html