High-z AGNs at the end of the Dark Ages

Astonishing results have been recently obtained for the population ofhigh-z AGNs from deep JWST observations and wide ground based surveys,well within the Reionization epoch and close to the end of the DarkAges. The most relevant novelties are the large space density of faintAGNs at z>4, their extreme weakness in X-ray luminosities, theirover-massive SMBHs with respect to the expectation from local scalingrelations, the coevolution with their host galaxies, and theunexpectedly emergence of the previously unknown population of LittleRed Dots. In this talk, I will discuss the implications of theseunexpected results on the nature of the sources driving theReionization process and on the seeding of early SMBHs. Finalperspective will be dedicated to the possible expectations fromongoing and future observational facilities like Euclid, Vera RubinLSST, and ELT on the statistical and physical properties of the high-zAGNs, that will reserve us many other surprises in the near future.

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Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2024-09-26
DOI
https://doi.org/10.5281/zenodo.13870637
Primary Topic
Galaxies: Formation, Evolution, Phenomena
Type
article
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article

High-z AGNs at the end of the Dark Ages

Zenodo (CERN European Organization for Nuclear Research)
Galaxies: Formation, Evolution, Phenomena
article

High-z AGNs at the end of the Dark Ages

article en

Abstract

Astonishing results have been recently obtained for the population ofhigh-z AGNs from deep JWST observations and wide ground based surveys,well within the Reionization epoch and close to the end of the DarkAges. The most relevant novelties are the large space density of faintAGNs at z>4, their extreme weakness in X-ray luminosities, theirover-massive SMBHs with respect to the expectation from local scalingrelations, the coevolution with their host galaxies, and theunexpectedly emergence of the previously unknown population of LittleRed Dots. In this talk, I will discuss the implications of theseunexpected results on the nature of the sources driving theReionization process and on the seeding of early SMBHs. Finalperspective will be dedicated to the possible expectations fromongoing and future observational facilities like Euclid, Vera RubinLSST, and ELT on the statistical and physical properties of the high-zAGNs, that will reserve us many other surprises in the near future.

Zenodo (CERN European Organization for Nuclear Research)
National Institute for Astrophysics (IT)
Openalex Percentile: Top 64%
Galaxies: Formation, Evolution, Phenomena
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High-z AGNs at the end of the Dark Ages · Zenodo (CERN European Organization for Nuclear Research) (2024) | TGRS Research Map | TGRS