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SUMMARY:Super-Eddington accreting supermassive black holes at high-redshif
 t in cosmological simulations - Lucas Tortora / IoA
DTSTART:20251105T131500Z
DTEND:20251105T134000Z
UID:TALK240493@talks.cam.ac.uk
CONTACT:Xander Byrne
DESCRIPTION:The discovery of gargantuan black holes (BHs) with masses in e
 xcess of a billion solar masses at z > 6\, confirmed by JWST observations\
 , suggests extremely rapid BH growth and significant energy input into the
 ir host galaxies in the early Universe. As observations continue to probe 
 these objects at higher redshifts\, developing a robust theoretical framew
 ork for their formation and impact is crucial. In this work\, we use high-
 resolution zoom-in simulations of a massive protocluster at z ∼ 6\, empl
 oying both the fiducial FABLE galaxy formation model and a set of modifica
 tions to allow earlier seeding and super-Eddington accretion. These simula
 tions have been shown to reproduce the most extreme quasars known in the e
 arly Universe. We perform full radiative transfer calculations in post-pro
 cessing with a novel and accurate ray-tracing code to assess the effects o
 f the quasar radiation field on its environment. We find that super-Edding
 ton accretion results in strong feedback which launches powerful outflows\
 , resulting in (i) increased abundance of fast cold gas and (ii) strengthe
 ned impact of the quasar radiation field\, piercing far into the circumgal
 actic and intergalactic media.
LOCATION:Hoyle Lecture theatre + Zoom 
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