Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Can stellar-mass black hole growth disrupt disks of active galactic
  nuclei? The role of mechanical feedback   Stellar-mass BHs (sBHs) are predicted to be embedded in active galactic
nuclei (AGN) disks due to gravitational drag and in-situ star formation.
However, we find that due to a high gas density in an AGN disk environment,
compact objects may rapidly grow to intermediate-mass BHs and deplete matter
from the AGN disk unless accretion is suppressed by some feedback process(es).
These consequences are inconsistent with AGN observations and the dynamics of
the Galactic center. Here we consider mechanical feedback mechanisms for the
reduction of gas accretion. Rapidly accreting sBHs launch winds and/or jets via
the Blandford-Znajek mechanism, which produce high-pressure shocks and cocoons.
Such a shock and cocoon can spread laterally in the plane of the disk, eject
the outer regions of a circum-sBH disk (CsBD) and puncture a hole in the AGN
disk with horizontal size comparable to the disk scale-height. Since the
depletion timescale of the bound CsBD is much shorter than the resupply
timescale of gas to the sBH, the time-averaged accretion rate onto sBHs is
reduced by this process by a factor of $\sim 10$--$100$. This feedback
mechanism can therefore help alleviate the sBH over-growth and AGN-disk
depletion problems. On the other hand, we find that cocoons of jets can unbind
a large fraction of the gas accreting in the disks of less massive SMBHs, which
may help explain the dearth of high-Eddington ratio AGNs with SMBH mass
$\lesssim10^5{\rm M_\odot}$.

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The categories of this paper are: chem-ph
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The categories of this paper are: math-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: cs
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The categories of this paper are: q-fin
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The categories of this paper are: hep-ph
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The categories of this paper are: stat
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The categories of this paper are: physics
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The categories of this paper are: nlin
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The categories of this paper are: q-alg
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The categories of this paper are: hep-lat
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The categories of this paper are: econ
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The categories of this paper are: comp-gas
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The categories of this paper are: alg-geom
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The categories of this paper are: nucl-th
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The categories of this paper are: gr-qc