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Observing positive and negative AGN feedback

Galaxy-scale outflows powered by actively accreting supermassive black holes are routinely detected, and they have been associated with both the suppression and triggering of star formation. Recent observational evidence and simulations are favouring a delayed mechanism that connects outflows and star formation.

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Fig. 1: The ‘snakes and ladders’ game played by the participants of the discussion session on negative and positive feedback at the Lorentz Center workshop ‘The reality and myths of AGN feedback’ (Leiden, 16–20 October 2017).


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This Comment is based on discussions at the Lorentz Center workshop ‘The reality and myths of AGN feedback’ held in Leiden, 16–20 October 2017. We thank all of the workshop participants for their suggestions, in particular C. Harrison, C. Circosta, M. Brusa, J. Scholtz, G. Venturi, M. Perna and G. Vietri. R.M. acknowledges support from the European Research Council advanced grant 695671 ‘QUENCH’.

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Correspondence to Giovanni Cresci.

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Cresci, G., Maiolino, R. Observing positive and negative AGN feedback. Nat Astron 2, 179–180 (2018).

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