Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: VERITAS Observations of the Galactic Center Ridge   Due to its extraordinarily high concentration of known relativistic particle
accelerators such as pulsar wind nebula, supernova remnants, dense molecular
cloud regions, and the supermassive black hole (Sgr A*); the center of the
Milky Way galaxy has long been an ideal target for high energy (HE, 0.1-100
GeV) and very high energy ( VHE, 50 GeV-50 TeV) gamma-ray emission. Indeed,
detections of Sgr A* and other nearby regions of gamma-ray emission have been
reported by EGRET and Fermi-LAT in the HE band, as well as CANGAROO, Whipple,
HESS, VERITAS, and MAGIC in the VHE band. Here we report on the results of
extended observations of the region with VERITAS between 2010-2014. Due to the
visibility of the source for VERITAS in the Northern Hemisphere, these
observations provide the most sensitive probe of gamma-ray emission above 2 TeV
in one of the most complicated and interesting regions of our home galaxy.

13
The categories of this paper are: quant-ph
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The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
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The categories of this paper are: econ
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
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The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
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The categories of this paper are: nucl-th
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The categories of this paper are: plasm-ph
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The categories of this paper are: funct-an
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The categories of this paper are: physics
5
The categories of this paper are: gr-qc