March 1, 2024The Astrophysical JournalOpen Access

Little Red Dots: An Abundant Population of Faint Active Galactic Nuclei at z ∼ 5 Revealed by the EIGER and FRESCO JWST Surveys

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Authors

JMJorryt MattheeInstitute of Science and Technology Austria RNRohan P. NaiduVassar College GBGabriel BrammerUniversity of Copenhagen

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Implication

Spectroscopic survey reveals abundant faint active galactic nuclei at z ≈ 5, indicating heavily obscured early black hole growth and limited contributions to cosmic reionization.

Key Points

Faint active galactic nuclei are unexpectedly abundant in the early Universe, exhibiting broad H alpha line fluxes powered by supermassive black hole accretion.
Number densities reach approximately 10−5 cMpc−3 across UV luminosities of −21 to −18, exceeding standard quasar luminosity function extrapolations tenfold.
Wide field slitless spectroscopy demonstrates that early supermassive black hole growth is heavily obscured, playing only a minor role in cosmic reionization.

Cite This Study

Matthee et al. (2024) studied this question.

synapsesocial.com/papers/68e7604eb6db6435876d748e https://doi.org/10.3847/1538-4357/ad2345

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Implication

Spectroscopic survey reveals abundant faint active galactic nuclei at z ≈ 5, indicating heavily obscured early black hole growth and limited contributions to cosmic reionization.

Little Red Dots: An Abundant Population of Faint Active Galactic Nuclei at z ∼ 5 Revealed by the EIGER and FRESCO JWST Surveys

Discussion

Member takes

Implication

Key Points

Cite This Study

Little Red Dots: An Abundant Population of Faint Active Galactic Nuclei at z ∼ 5 Revealed by the EIGER and FRESCO JWST Surveys

Discussion

Member takes

Implication

Key Points

Cite This Study

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