Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Astrophysical Neutrinos with IceCube   The 1 km$^3$ IcCube neutrino observatory was built to find high-energy
neutrinos that are associated with the sources of ultra-high energy cosmic
rays. Its 5,160 optical sensors detect Cherenkov light from the charged
particles produced when neutrinos interact in the ice. In this talk, I will
describe the techniques that IceCube has used to search for astrophysical
neutrinos. An emphasis will be given to diffuse neutrinos (not associated with
a specific source), including analyses of contained events and energetic
through-going neutrinos. At the end, I will discuss multi-messenger astronomy,
and present an intriguing correlation between a high-energy IceCube neutrino
and a blazar in outburst.

21
The categories of this paper are: adap-org
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol