92 citations · 553 across the 58 of their papers we have counts for
3 papers · 1 filter
X-ray properties of z>4 blazars
L. Ighina, A. Caccianiga, A. Moretti +4
We present the X-ray analysis of the largest flux-limited complete sample of blazar candidates at z>4 selected from the Cosmic Lens All Sky Survey (CLASS). After obtaining a nearly…
An extremely X--ray weak blazar at z=5
S. Belladitta, A. Moretti, A. Caccianiga +5
We present the discovery and properties of DESJ014132.4-542749.9 (DES0141-54), a new powerful radio-loud active galactic nucleus (AGN) in the early Universe (z=5.0). It was discove…
The space density of z>4 blazars
Alessandro Caccianiga, Alberto Moretti, Silvia Belladitta +9
High redshift blazars are an important class of Active Galactic Nuclei (AGN) that can provide an independent estimate of the supermassive black-hole mass function in high redshift…