Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: HAWC Observation of Supernova Remnants and Pulsar Wind Nebulae   The majority of Galactic TeV gamma-ray sources are pulsar wind nebulae (PWNe)
and supernova remnants (SNRs), and the most common association for unidentified
sources is PWN. Many of these sources were discovered in TeV by imaging air
Cherenkov telescopes using overlapping pointed observations over sections of
the Galactic plane. The HAWC observatory is a survey type instrument in the
Northern hemisphere with an energy range of 100 GeV to 100 TeV. Preliminary
analysis of data recorded with the partially completed HAWC array taken since
2013 shows extended detections that are coincident with known TeV SNRs and
PWNe. The full array became operational in early 2015 and has been steadily
surveying the Northern sky since. I will discuss detections in HAWC data taken
since 2013 associated with PWNe and SNRs.

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The categories of this paper are: alg-geom
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The categories of this paper are: nucl-ex
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The categories of this paper are: mtrl-th
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The categories of this paper are: plasm-ph
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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: comp-gas
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The categories of this paper are: quant-ph
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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: solv-int
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The categories of this paper are: cond-mat
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The categories of this paper are: ao-sci
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The categories of this paper are: eess
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The categories of this paper are: physics
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The categories of this paper are: chem-ph