Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Some Implications of the Leptonic Annihilation of Dark Matter: Possible
  Galactic Radio Emission Signatures and the Excess Radio Flux of Extragalactic
  Origin   We give theoretical predictions for the radio emission of a dark matter
candidate annihilating into 2-lepton and 4-lepton final states. We then compare
our results with the known radio measurements of the sky temperature as a
function of the frequency. In particular, we calculate the radio emission for
some dark matter candidates annihilating into intermediate bosons that
subsequently decay into a 4-lepton channel with a thermal annihilation
cross-section. We show that within the range of frequencies from $20\,{\rm
MHz}$ to $5\,{\rm GHz}$, this channel can produce a stronger signature than
direct annihilation into leptons.

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The categories of this paper are: acc-phys
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The categories of this paper are: patt-sol
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The categories of this paper are: adap-org
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
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The categories of this paper are: q-alg
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The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
4
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: dg-ga
8
The categories of this paper are: hep-ex
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The categories of this paper are: comp-gas
16
The categories of this paper are: stat
9
The categories of this paper are: nlin