Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The GeV Excess Shining Through: Background Systematics for the Inner
  Galaxy Analysis   Recently, a spatially extended excess of gamma rays collected by the
Fermi-LAT from the inner region of the Milky Way has been detected by different
groups and with increasingly sophisticated techniques. Yet, any final
conclusion about the morphology and spectral properties of such an extended
diffuse emission are subject to a number of potentially critical uncertainties,
related to the high density of cosmic rays, gas, magnetic fields and abundance
of point sources. We will present a thorough study of the systematic
uncertainties related to the modelling of diffuse background and to the
propagation of cosmic rays in the inner part of our Galaxy. We will test a
large set of models for the Galactic diffuse emission, generated by varying the
propagation parameters within extreme conditions. By using those models in the
analysis of Fermi-LAT data as Galactic foreground, we will show that the
gamma-ray excess survives and we will quantify the uncertainties affecting the
excess morphology and energy spectrum.

22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
2
The categories of this paper are: math
19
The categories of this paper are: eess
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio