Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: TeV Gamma-ray Observations of The Galactic Center Ridge By VERITAS   The Galactic Center Ridge has been observed extensively in the past by both
GeV and TeV gamma-ray instruments revealing a wealth of structure, including a
diffuse component as well as the point sources G0.9+0.1 (a composite supernova
remnant) and Sgr A* (believed to be associated with the supermassive black hole
located at the center of our Galaxy). Previous very high energy (VHE) gamma-ray
observations with the H.E.S.S. experiment have also detected an extended TeV
gamma-ray component along the Galactic plane in the >300 GeV gamma-ray regime.
Here we report on observations of the Galactic Center Ridge from 2010-2014 by
the VERITAS telescope array in the >2 TeV energy range. From these observations
we 1.) provide improved measurements of the differential energy spectrum for
Sgr A* in the >2 TeV gamma-ray regime, 2.) provide a detection in the >2 TeV
gamma-ray emission from the composite SNR G0.9+0.1 and an improved
determination of its multi-TeV gamma-ray energy spectrum, 3.) report on the
detection of VER J1746-289, a localized enhancement of >2 TeV gamma-ray
emission along the Galactic plane.

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The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
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The categories of this paper are: solv-int
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The categories of this paper are: math-ph
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
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The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
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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: cond-mat
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The categories of this paper are: gr-qc
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The categories of this paper are: cs
0
The categories of this paper are: hep-ph