Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/32110
Title: | The evolution of the heaviest super-massive black-holes in jetted AGNs | Authors: | Alessandro Diana CACCIANIGA, Alessandro MORETTI, Alberto IGHINA, LUCA BELLADITTA, SILVIA DELLA CECA, Roberto |
Issue Date: | 2022 | Journal: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Number: | 511 | Issue: | 4 | First Page: | 5436 | Abstract: | We present the space density evolution, from z=1.5 up to z=5.5, of the most massive (M$\geq10^9$M$_{\odot}$) black holes hosted in jetted Active Galactic Nuclei(AGNs). The analysis is based on a sample of 380 luminosity-selected ($\lambda$L$_{1350}\geq10^{46}$ erg s$^{-1}$ and P$_{5\text{GHz}}\geq10^{27}$ W Hz$^{-1}$) Flat Spectrum Radio Quasars (FSRQs) obtained from the Cosmic Lens All Sky Survey (CLASS). These sources are known to be face-on jetted AGNs (i.e. blazars) and can be exploited to infer the abundance of all the (misaligned) jetted AGNs, using a geometrical argument. We then compare the space density of the most massive SMBHs hosted in jetted AGNs with those present in the total population (mostly composed by non-jetted AGNs). We find that the space density has a peak at $z\sim3$, which is significantly larger than the value observed in the total AGN population with similar optical/UV luminosities ($z\sim2.2$), but not as extreme as the value previously inferred from X-ray selected blazars ($z\gtrsim4$). The jetted fraction (jetted AGNs/total AGNs) is overall consistent with the estimates in the local Universe (10--20\%) and at high redshift, assuming Lorentz bulk factors $\Gamma\approx5$. Finally, we find a marginal decrease in the jetted fraction at high redshifts (by a factor of $\sim2$). All these evidences point toward a different evolutionary path in the jetted AGNs compared to the total AGN population. | URI: | http://hdl.handle.net/20.500.12386/32110 | URL: | http://arxiv.org/abs/2202.03444v1 https://academic.oup.com/mnras/article/511/4/5436/6527590?login=true |
ISSN: | 0035-8711 | DOI: | 10.1093/mnras/stac364 | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
stac364.pdf | Pdf editoriale | 949.88 kB | Adobe PDF | View/Open |
Page view(s)
33
checked on Apr 23, 2024
Download(s)
13
checked on Apr 23, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.