Constraints on Very Faint High-z Quasars

Mark Dijkstra
2006 Proceedings of the International Astronomical Union  
I discuss the constraints that can be derived on the abundance of high redshift (z > 6) (mini)quasars from the unresolved soft X-Ray background. Furthermore, I will show how existing Lyα surveys can be used to probe the very faint MB −21 mag (i.e., 7-8 mag fainter than the SDSS quasars) end of the z 4.5 quasar luminosity function.
doi:10.1017/s1743921307010447 fatcat:azq7dg7l4be73cp7hypmlbsx5m