Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Search for Pulsed Very High-Energy Gamma Rays from Thirteen Young
  Pulsars in Archival VERITAS Data   We conduct a search for periodic emission in the very high-energy gamma-ray
band (VHE; E > 100 GeV) from a total of 13 pulsars in an archival VERITAS data
set with a total exposure of over 450 hours. The set of pulsars includes many
of the brightest young gamma-ray pulsars visible in the Northern Hemisphere.
The data analysis resulted in non-detections of pulsed VHE gamma rays from each
pulsar. Upper limits on a potential VHE gamma-ray flux are derived at the 95%
confidence level above three energy thresholds using two methods. These are the
first such searches for pulsed VHE emission from each of the pulsars, and the
obtained limits constrain a possible flux component manifesting at VHEs as is
seen for the Crab pulsar.

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The categories of this paper are: patt-sol
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The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
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The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: dg-ga
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The categories of this paper are: cmp-lg
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The categories of this paper are: nlin
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The categories of this paper are: chem-ph
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The categories of this paper are: funct-an
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The categories of this paper are: hep-th
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The categories of this paper are: hep-lat
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The categories of this paper are: comp-gas