Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Sgr A* Observations with H.E.S.S. II   The Galactic Centre has been studied with the High Energy Stereoscopic System
(H.E.S.S.) for over 10 years, revealing a bright, complex gamma-ray morphology.
Besides a strong point-like very-high-energy gamma-ray source coincident with
the supermassive black hole Sgr A*, pre- vious analyses also revealed a diffuse
ridge of gamma-ray emission, indicative of a powerful cosmic-ray accelerator in
this region. The addition of a fifth telescope with 600 m 2 mirror area to the
centre of the H.E.S.S. array has increased the energy range accessible,
allowing observations to take place down to 100 GeV and potentially below. This
wider energy range allows an important overlap in observations with satellite
instruments such as the Fermi-LAT gamma-ray telescope. We will present the
results of new H.E.S.S observations of the Galactic Centre region and show a
detailed analysis of the central source, including comparisons to results at
other wavelengths.

18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio