Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tidal Disruption Events by Relatively Compact Supermassive Black Hole
  Binaries   Stars can be tidally destroyed or swallowed by supermassive black hole
binaries. Using a large number of accurate few-body simulations, we investigate
the enhancement and suppression of full and partial disruption and direct
capture events by hard supermassive black hole binaries with a wide ranges of
key parameters, i.e., the primary black hole mass ($10^{5}-10^{8}M_{\odot}$),
the binary mass ratio ($10^{-3}-1$), the ratio of the binary semimajor axis to
the hardening radius ($10^{-4}-1$), the binary eccentricity ($0.0-0.9$) and the
stellar mass ($0.3-3M_{\odot}$). This is a significant extension of the
parameter space compared to previous work. We show that the encounter
probabilities of all three events are well-described by the encounter cross
section, which is proportional to the pericenter distance. The probability of
full disruptions by supermassive black hole binaries can be enhanced by up to a
factor of $40-50$ or suppressed by up to a factor of $10$, relative to that by
single black holes, depending on the binary parameters. The Post-Newtonian
effects are not important for the primary black hole mass $\leq
10^{7}M_{\odot}$, but can provide an additional enhancement of the full
disruption probability by less than a factor of $2-3$ for higher primary black
hole masses. We provide a fitting formula for the full disruption probability
by the hard supermassive black hole binaries that works for a wide range of
parameters. We also find that partial disruption events can occur multiple
times before full disruptions or direct captures, and their probabilities can
be greater than that of full disruption events by a factor of three. Because
partial disruption events can induce stellar spins and mass loss and change the
orbits, it can significantly affect the overall full disruption event rate and
the shape of the light curves.

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The categories of this paper are: q-fin
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The categories of this paper are: patt-sol
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The categories of this paper are: nucl-th
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The categories of this paper are: mtrl-th
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The categories of this paper are: bayes-an
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The categories of this paper are: math-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: stat
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The categories of this paper are: adap-org
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The categories of this paper are: ao-sci
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The categories of this paper are: chem-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: funct-an
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-lat
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The categories of this paper are: gr-qc