Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Modelling blazar radiation spectra Electron injection break and pair
  content of quasar jets   We study the dependence of nonthermal radiation spectra in OVV quasars on
location of the low energy break in the electron/positron injection function.
We show that the high energy spectra produced during the outbursts are
presumably superposed from two components, one resulting from Comptonization of
emission lines, which dominates at MeV-GeV energies, and the other resulting
from Comptonization of infrared radiation, which dominates in the X-ray band.

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The categories of this paper are: physics
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The categories of this paper are: gr-qc
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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-bio
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The categories of this paper are: comp-gas
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The categories of this paper are: eess
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The categories of this paper are: math-ph
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The categories of this paper are: econ
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The categories of this paper are: q-alg
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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: ao-sci