Аннотация
Supermassive black holes are the central engines of luminous quasars and are
found in most massive galaxies today. But the recent discoveries of ULAS
J1120+0641, a 2 $\times$ 10$^9$ M$_ødot$ black hole at $z \sim$ 7.1, and
SDSS J0100+2802, a 1.2 $\times$ 10$^10$ M$_ødot$ black hole at $z =$ 6.3,
challenge current paradigms of cosmic structure formation because it is not
known how quasars this massive appeared less than a billion years after the Big
Bang. Here, we report new cosmological simulations of SMBHs with x-rays fully
coupled to primordial chemistry and hydrodynamics that show that J1120+0641 and
J0100+2802 can form from direct collapse black holes if their growth is fed by
cold, dense accretion streams, like those thought to fuel the rapid growth of
some galaxies at later epochs. Our models reproduce the mass, luminosity and
ionized near zone of J1120+0641, as well as the star formation rate and
metallicity in its host galaxy. They also match new observations of the
dynamical mass of the central 1.5 kpc of its emission region just obtained with
ALMA. We find that supernova feedback from star formation in the host galaxy
regulates the growth of the quasar from early times.
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