Can I read Feedback effect on the observable properties of $z>6$ AGN on EtoBox?

Feedback effect on the observable properties of $z>6$ AGN by Vito, Fabio; Di Mascia, Fabio; Gallerani, Simona; Zana, Tommaso; Ferrara, Andrea; Carniani, Stefano; Gilli, Roberto is a scholarly article available to read on EtoBox.

What is Feedback effect on the observable properties of $z>6$ AGN about?

Active galactic nuclei (AGN) feedback has a major impact onto the supermassive black-hole (SMBH) growth, the properties of the host galaxies, and their cosmic evolution. We investigate the effects of different kinetic feedback prescriptions on the observable properties of AGN and their host galaxies at $z>6$ in a suite of zoom-in cosmological simulations. We find that kinetic feedback decreases the column density of the interstellar medium (ISM) in the host galaxy by up to a factor of $\approx10$, especially when the SMBHs reach high accretion rates ($\approx10-30\,\mathrm{M_\odot\,yr^{-1}}$). In particular, kinetic feedback is required to extend the ISM size to $>1$ kpc and match the observed sizes of the gas reservoirs in $z>6$ AGN host galaxies. Moreover, it produces unobscured lines of sight along which the AGN can be detected in the rest-frame UV band with magnitudes consistent with observed values of $z>6$ AGN. The assumed geometry of the outflow plays an important role in shaping the observed properties of high-redshift AGN. We find that a biconical geometry is favored over a spherical one to reproduce the observed properties, but it overestimates the number of multiple AGN

Author

Vito, Fabio; Di Mascia, Fabio; Gallerani, Simona; Zana, Tommaso; Ferrara, Andrea; Carniani, Stefano; Gilli, Roberto

Published

2022

Language

EN