Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Progress and Prospects in Neutrino Astrophysics   The neutrino deficits observed in four solar neutrino experiments, relative
to the theoretical predictions, have led to fresh insights into neutrino and
solar physics. Neutrino emission from distant, energetic astronomical systems
may form the basis for a new field of astronomy. Additional experiments are
needed to test explanations of the solar neutrino deficits and to allow the
detection of more distant sources.

3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con