Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High energy tau neutrinos: production, propagation and prospects of
  observations   High energy tau neutrinos with energy greater than several thousands of GeV
may be produced in some astrophysical sites. A summary of the intrinsic high
energy tau neutrino flux estimates from some representative astrophysical sites
is presented including the effects of neutrino flavor oscillations. The
presently envisaged prospects of observations of the oscillated high energy tau
neutrino flux are mentioned. In particular, a recently suggested possibility of
future observations of Earth-skimming high energy tau neutrinos is briefly
discussed.

33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg