Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Perplexing correlations between Gamma-ray emission and parsec-scale jet
  orientation variations in the BL Lac object S5 0716+714   The analysis of $\gamma$-ray flux variability along with the parsec-scale jet
kinematics suggests that the high-energy radiation in the BL Lac object S5
0716+714 has a significant correlation with the mm-VLBI core flux density and
with the local orientation of the inner jet flow. For the first time in any
blazar, we report a significant correlation between the $\gamma$-ray flux
variations and the variations in the local orientation of the jet outflow
(position angle). We find that the $\gamma$-ray flux variations lead the 7~mm
VLBI core flux variations by 82$\pm$32~days, which suggests that the
high-energy emission in S5 0716+714 is coming from a region located
3.8$\pm$1.9~parsecs closer to the central black hole than the "core" seen on
the mm-VLBI images. The results imply a strong physical and casual connection
between $\gamma$-ray emission and the inner jet morphology in the source.

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The categories of this paper are: funct-an
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The categories of this paper are: comp-gas
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The categories of this paper are: q-alg
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The categories of this paper are: dg-ga
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The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
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The categories of this paper are: quant-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: stat
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The categories of this paper are: ao-sci
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The categories of this paper are: alg-geom
3
The categories of this paper are: physics