Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Clumpiness enhancement of charged cosmic rays from dark matter
  annihilation with Sommerfeld effect   Boost factors of dark matter annihilation into antiprotons and
electrons/positrons due to the clumpiness of dark matter distribution are
studied in detail in this work, taking the Sommerfeld effect into account. It
has been thought that the Sommerfeld effect, if exists, will be more remarkable
in substructures because they are colder than the host halo, and may result in
a larger boost factor. We give a full calculation of the boost factors based on
the recent N-body simulations. Three typical cases of Sommerfeld effects, the
non-resonant, moderately resonant and strongly resonant cases are considered.
We find that for the non-resonant and moderately resonant cases the enhancement
effects of substructures due to the Sommerfeld effect are very small ($\sim
\mathcal{O}(1)$) because of the saturation behavior of the Sommerfeld effect.
For the strongly resonant case the boost factor is typically smaller than $\sim
\mathcal{O}(10)$. However, it is possible in some very extreme cases that DM
distribution is adopted to give the maximal annihilation the boost factor can
reach up to $\sim 1000$. The variances of the boost factors due to different
realizations of substructures distribution are also discussed in the work.

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The categories of this paper are: adap-org
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The categories of this paper are: nlin
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-lat
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The categories of this paper are: q-bio
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The categories of this paper are: funct-an
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The categories of this paper are: atom-ph
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The categories of this paper are: physics
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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: math-ph
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The categories of this paper are: stat
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The categories of this paper are: cond-mat
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The categories of this paper are: chao-dyn
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The categories of this paper are: nucl-ex
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The categories of this paper are: plasm-ph