Effects of Heat Conduction on Blocking off the Super-Eddington Growth of Black Holes at High Redshift

Abstract We investigate the effect of conductive heating gas surrounding a geometrically thick accretion disk on growth black hole (BH) at high redshift. If BH is accreting super-Eddington rate, X-ray radiation from vicinity would be highly anisotropic due to self-shielding disk, and then radiative feedback medium suppressed in equatorial region, within which can continue. However, if this region sufficiently heated via thermal conduction adjacent that not shielded by irradiation, becomes isotropically hot, Bondi rate become sub-Eddington. evaluate condition under such isotropic realized derive new criteria required for accretion.