Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Relativistic equilibrium velocity distribution to improve standard solar
  models   The current standard solar models can be improved by substituting the
relativistic equilibrium velocity distribution for the Maxwellian velocity
distribution. The relativistic equilibrium velocity distribution is close-
fitting to the Maxwellian velocity distribution in the low-velocity part and
substantially different from the Maxwellian velocity distribution in the
high-velocity part, and vanishes at the velocity of light. If adopted in
standard solar models, it will lower solar neutrino fluxes, change solar
neutrino energy spectra but maintain solar sound speeds.

36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics