Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Search for patterns by combining cosmic-ray energy and arrival
  directions at the Pierre Auger Observatory   Energy-dependent patterns in the arrival directions of cosmic rays are
searched for using data of the Pierre Auger Observatory. We investigate local
regions around the highest-energy cosmic rays with $E \geq 6 \cdot 10^{19}$ eV
by analyzing cosmic rays with energies above $E = 5 \cdot 10^{18}$ eV arriving
within an angular separation of approximately $15{\deg}$. We characterize the
energy distributions inside these regions by two independent methods, one
searching for angular dependence of energy-energy correlations and one
searching for collimation of energy along the local system of principal axes of
the energy distribution. No significant patterns are found with this analysis.
The comparison of these measurements with astrophysical scenarios can therefore
be used to obtain constraints on related model parameters such as strength of
cosmic-ray deflection and density of point sources.

10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph