This future-looking paper proposes an optical telescope array that would employ long-baseline intensity interferometry to image Active Galactic Nuclei (AGN) disks with unprecedented angular resolution. Applications include disk radial profiles of nearby bright AGN, and resolved imaging of Broad Line Regions at cosmological distances, paving the way for using AGN as standard candles to independently measure the Hubble parameter.
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Dalal et al. (2024) studied this question.
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