Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Search for TeV Emission from Unidentified Sources in the Galactic
  Plane   The ~70 unidentified sources of the EGRET sky survey may be one of its most
important legacies. The identification of these sources at other wavelengths is
critical to understanding their nature. Many have flat spectra out to 10 GeV
which, if extrapolated to TeV energies, would be easily detectable relative to
the steeply falling diffuse background. The Whipple Observatory gamma-ray
telescope has been used to observe a number of these which were selected based
on their position, intensity and spectrum and in some cases based on a possible
association with a supernova remnant or pulsar. No significant emission has
been detected from these sources, and upper limits are given.

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The categories of this paper are: ao-sci
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The categories of this paper are: bayes-an
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The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
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The categories of this paper are: cmp-lg
2
The categories of this paper are: math
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The categories of this paper are: dg-ga
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The categories of this paper are: q-alg
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The categories of this paper are: plasm-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-fin
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
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The categories of this paper are: solv-int
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The categories of this paper are: adap-org