Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A New Method for Finding Point Sources in High-energy Neutrino Data   The IceCube collaboration has reported the first detection of high-energy
astrophysical neutrinos including $\sim 50$ high-energy starting events, but no
individual sources have been identified. It is therefore important to develop
the most sensitive and efficient possible algorithms to identify point sources
of these neutrinos. The most popular current method works by exploring a dense
grid of possible directions to individual sources, and identifying the single
direction with the maximum probability of having produced multiple detected
neutrinos. This method has numerous strengths, but it is computationally
intensive and, because it focuses on the single best location for a point
source, additional point sources are not included in the evidence. We propose a
new maximum likelihood method that uses the angular separations between all
pairs of neutrinos in the data. Unlike existing autocorrelation methods for
this type of analysis, which also use angular separations between neutrino
pairs, our method incorporates information about the point spread function and
can identify individual point sources. We find that if the angular resolution
is a few degrees or better, then this approach reduces both false positive and
false negative errors compared to the current method, and is also more
computationally efficient up to, potentially, hundreds of thousands of detected
neutrinos.

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The categories of this paper are: physics
29
The categories of this paper are: funct-an
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The categories of this paper are: math
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
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The categories of this paper are: cmp-lg
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The categories of this paper are: bayes-an
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The categories of this paper are: solv-int
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The categories of this paper are: gr-qc
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The categories of this paper are: atom-ph
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The categories of this paper are: econ
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The categories of this paper are: hep-ex
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The categories of this paper are: stat
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The categories of this paper are: chem-ph
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The categories of this paper are: alg-geom