Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: MACRO as a Telescope for Neutrino Astronomy   We use a sample of 990 upward-going muons, induced primarily by atmospheric
neutrinos, to search for neutrinos of astrophysical origin. No evidence has
been found using the event direction information. Flux limits of the order of
10^-15 cm^-2 s^-1 are imposed on current models for candidate point-sources. A
space-time correlation search has been undertaken between 2328 BATSE gamma ray
bursts (GRBs) and MACRO upward-going muons.

26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph