Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Are starburst galaxies a common source of high energy neutrinos and
  cosmic rays?   A recent analysis of cosmic ray air showers observed at the Pierre Auger
Observatory indicates that nearby starburst galaxies (SBGs) might be the cause
of ~10% of the Ultra-High-Energy Cosmic Ray flux at energies E > 39 EeV. Since
high energy neutrinos are a direct product of cosmic ray interactions, we
investigate SBGs as a possible source of some of the ~ 10^-2 - 1 PeV neutrinos
observed at IceCube. A statistical analysis is performed to establish the
degree of positional correlation between the observed neutrinos and a set of 45
nearby radio- and infrared-bright SBGs. Our results are consistent with no
causal correlation. However, a scenario where ~10% of the High Energy Starting
Events (HESE) in the detector are coming from the candidate SBGs is not
excluded. The same conclusion is reached for different data subsets, as well as
two different subsets of SBGs motivated by the Pierre Auger Observatory
analysis.

28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th