Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Galactic Centre as an efficient source of cosmic rays   After the discovery of Fermi Bubbles and the excess of gamma-ray emission,
the Galactic Centre has received increasing attention with the aim to
understand its role in the origin and acceleration of primary cosmic rays
(CRs). Based on a diffusion/re-acceleration model, we use the GALPROP software
to solve the diffusion equation for the cosmic rays and compare the results
with the CRs spectrum, motivated by relationship between several energetic
sources at the Galactic Centre and the generated diffuse GeV-TeV gamma-rays. We
calculate the cosmic ray distribution, gamma-ray flux from Galactic Centre and
explore its contribution on the spectrum and chemical composition of cosmic
rays observed at Earth. We also discuss the effects of nuclei interactions with
different interstellar gas models.

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The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
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The categories of this paper are: stat
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph