A universal average spectral energy distribution for quasars from the optical to the extreme ultraviolet
Nature Astronomy, Published online: 05 October 2023; doi:10.1038/s41550-023-02088-5
A large-scale analysis of quasars reveals that on average, the intrinsic brightness is uniform from the optical to the extreme ultraviolet and is less than expected in the extreme ultraviolet, suggesting prevalent winds that affect black hole growth.
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