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October 2, 2025The Astrophysical JournalOpen Access

Halo Occupation Distribution of Quasars: Dependence on Luminosity, Redshift, Black Hole Mass and Feedback Modes

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Cosmological simulations reveal how quasar occupation varies by luminosity and redshift, indicating significant feedback effects.

Quasars show a strong dependency on redshift, luminosity, and black hole mass in their halo occupation distribution.
A significant bias can be introduced in halo mass distributions if quenching effects on central occupation are ignored.
The satellite quasar fraction increases from high to low redshifts, suggesting varying cluster dynamics over time.
Feedback modes and luminosity threshold affect the occupation function, while supermassive black hole behavior remains stable.

Chowdhary et al. (2025) studied this question.

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