Little red dots shift from underdense, low-halo-mass environments at z>4 to ordinary galaxy environments by z~3.5, explaining their declining abundance at z<3.
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Two z~6.6 galaxies host overmassive black holes and show remnant ionized bubbles from recent quasar episodes, with BH-to-stellar mass ratios 400-800 times above the local relation.
At z≈5–6, quasar clustering implies host dark matter halos of ~10^12 M_sun and duty cycles below ~1%, but the value depends strongly on the adopted quasar luminosity function.
citing papers explorer
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Reduced Incidence of Little Red Dots at z < 3 from Number Density and Halo Mass Evolution
Little red dots shift from underdense, low-halo-mass environments at z>4 to ordinary galaxy environments by z~3.5, explaining their declining abundance at z<3.
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Life After the Quasar: Overmassive Black Holes and Remnant Ionised Bubbles in and Around Two z~6.6 Galaxies
Two z~6.6 galaxies host overmassive black holes and show remnant ionized bubbles from recent quasar episodes, with BH-to-stellar mass ratios 400-800 times above the local relation.
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Probing Dark Matter Halos of High-redshift Quasars via Wide-Field Clustering
At z≈5–6, quasar clustering implies host dark matter halos of ~10^12 M_sun and duty cycles below ~1%, but the value depends strongly on the adopted quasar luminosity function.