Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Constraints on the opacity profile of the sun from helioseismic
  observables and solar neutrino flux measurements   Motivated by the solar composition problem and by using the recently
developed Linear Solar Model approach, we analyze the role of opacity and
metals in the sun. After a brief discussion of the relation between the effects
produced by a variation of composition and those produced by a modification of
the radiative opacity, we calculate numerically the opacity kernels that, in a
linear approximation, relate an arbitrary opacity variation to the
corresponding modification of the solar observable properties. We use these
opacity kernels to discuss the present constraints on opacity (and composition)
provided by helioseismic and solar neutrino data.

14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas