Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observations of low- and intermediate-frequency-peaked BL Lacs above 100
  GeV with VERITAS   Most of the ~50 blazars detected to date at TeV energies (E>0.1 TeV) are
high-frequency-peaked BL Lacs (HBLs). Only a handful episodic TeV detections of
low- and intermediate-frequency-peaked BL Lacs (LBL/IBLs, with synchrotron peak
frequencies in the infrared and optical regime) have been reported, typically
during high-flux states. The VERITAS array, a ground-based TeV observatory
located in southern Arizona has observed five known TeV LBL/IBLs since 2009: 3C
66A, W Comae, PKS 1424+240, S5 0716+714 and BL Lacertae, with at least 5-10
hours/year, which so far resulted in the detection of a bright, sub-hour
timescale gamma-ray flare of BL Lacertae in June 2011. We also report the
detection and characterization of two new IBLs: VER J0521+211 and B2 1215+30.

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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: quant-ph
5
The categories of this paper are: gr-qc
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The categories of this paper are: supr-con
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The categories of this paper are: cmp-lg
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The categories of this paper are: stat
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The categories of this paper are: cond-mat
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The categories of this paper are: comp-gas
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The categories of this paper are: funct-an
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The categories of this paper are: chem-ph
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The categories of this paper are: eess
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The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: adap-org
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The categories of this paper are: bayes-an