Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Identifying Breaks and Curvature in the Fermi Spectra of Bright FSRQs
  and Constraining the Emission Region   Deviation of the gamma-ray energy spectra of Flat Spectrum Radio Quasars
(FSRQs) from a simple power law has been previously observed but the cause of
this remains unidentified. If the gamma-ray emission region is close to the
central black hole then absorption of gamma-rays with photons from the broad
line region is predicted to produce two spectral breaks in the gamma-ray
spectra at fixed energies. We examine 9 bright FSRQs for evidence of breaks and
curvature. Although we confirm deviation from a simple power law, break
energies are usually not where predicted by the double-absorber model. In some
objects a log-parabola fit is better than a broken power law. By splitting the
data into two equal time epochs we find that the spectral shape of many objects
varies over time.

23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
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The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
3
The categories of this paper are: physics