39 citations · 106 across the 5 of their papers we have counts for
9 papers
The central engine of the highest redshift blazar
Silvia Belladitta, Alessandro Caccianiga, Alessandro Diana +8
We report on a LUCI/Large Binocular Telescope near-infrared (NIR) spectrum of PSO J030947.49+271757.31 (hereafter PSO J0309+27), the highest redshift blazar known to date (z6…
Minute-timescale variability in the X-ray emission of the highest redshift blazar
Alberto Moretti, Gabriele Ghisellini, Alessandro Caccianiga +9
We report on two Chandra observations of the quasar PSO J0309+27, the most distant blazar observed so far (z=6.1), performed eight months apart, in March and November 2020. Previou…
The Impact of the CMB on the Evolution of high-z Blazars
L. Ighina, A. Caccianiga, A. Moretti +3
Different works have recently found an increase of the average X-ray-to-radio luminosity ratio with redshift in the blazar population. We evaluate here whether the inverse Compton…
Radio Detection of VIK J23183113, the Most Distant Radio-Loud Quasar (=6.44)
L. Ighina, S. Belladitta, A. Caccianiga +4
We report the 888 MHz radio detection in the Rapid ASKAP Continuum Survey (RACS) of VIK J23183113, a =6.44 quasar. Its radio luminosity (1.2 W Hz at 5…
Parsec-scale properties of the radio brightest jetted AGN at z > 6
C. Spingola, D. Dallacasa, S. Belladitta +4
We present Director's Discretionary Time multi-frequency observations obtained with the Jansky Very Large Array (VLA) and the Very Long Baseline Array (VLBA) of the blazar PSO J030…
The first blazar observed at z>6
S. Belladitta, A. Moretti, A. Caccianiga +9
We present the discovery of PSO J030947.49+271757.31, the radio brightest (23.7 mJy at 1.4 GHz) active galactic nucleus (AGN) at z>6.0. It was selected by cross-matching the NRAO V…