Black hole feeding and feedback are often studied disjointly in both observations and simulations. We encourage the adoption of three physically motivated scales, linking them in a tight multiphase self-regulated loop. We pinpoint the key open questions of this unification problem and advocate for a multiwavelength, multiscale and interdisciplinary community.
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Acknowledgements
M.G. is supported by the Lyman Spitzer Jr Fellowship (Princeton University) and by NASA Chandra grants GO7-18121X, GO8-19104X, GO9-20114X, and NASA HST grant GO-15890.020-A. F.T. acknowledges support by the ‘Programma per Giovani Ricercatori – Rita Levi Montalcini’ (2014). We are grateful to all the participants of the ‘Multiphase AGN Feeding & Feedback’ workshop (held at the Sexten Center for Astrophysics (SCfA) in Sesto, Italy; http://www.sexten-cfa.eu/event/multiphase-agn-feeding-feedback) for stimulating presentations that inspired part of this work.
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Gaspari, M., Tombesi, F. & Cappi, M. Linking macro-, meso- and microscales in multiphase AGN feeding and feedback. Nat Astron 4, 10–13 (2020). https://doi.org/10.1038/s41550-019-0970-1
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DOI: https://doi.org/10.1038/s41550-019-0970-1
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