Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observation of Cosmic Ray Anisotropy with Nine Years of IceCube Data   The IceCube Observatory has collected over 577 billion cosmic-ray induced
muon events in its final configuration from May 2011 to May 2020. We used this
data set to provide an unprecedented statistically accurate map of the cosmic
ray arrival direction distribution in the TeV-PeV energy range scale in the
Southern Hemisphere. Such an increase in event statistics makes it possible to
extend the sensitivity to anisotropies at higher cosmic ray energies and
smaller angular scales. It will also facilitate a more detailed assessment of
the observatory stability over both short- and long-time scales. This will
enable us to study the time variability of the cosmic ray anisotropy on a
yearly-base and over the entire data sample period covering most of the solar
cycle 24. We present the preliminary results from the study with the extended
event sample.

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The categories of this paper are: hep-ph
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn