Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The cosmic ray luminosity of the nearby active galactic nuclei   The pointing directions of extensive air showers observed at the Pierre Auger
Observatory were fitted within 3.1 degree with positions of the nearby active
galactic nuclei from the Veron-Cetty and P. Veron catalog. The cosmic ray
luminosity of the active galactic nuclei which happened to be a source of the
particular cosmic ray event constitutes a fraction ~0.0001 of the optical one
if only cosmic ray particles with energies above 60 EeV are produced. If
produced cosmic ray particles have a spectrum dE/E^3 up to ~100 GeV then the
cosmic ray luminosity would be much higher than the optical one of the active
galactic nuclei.

21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
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The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc