Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Turbulence in the Solar Corona   The solar corona has been revealed in the past decade to be a highly dynamic
nonequilibrium plasma environment. Both the loop-filled coronal base and the
extended acceleration region of the solar wind appear to be strongly turbulent,
but direct observational evidence for a cascade of fluctuation energy from
large to small scales is lacking. In this paper I will review the observations
of wavelike motions in the corona over a wide range of scales, as well as the
macroscopic effects of wave-particle interactions such as preferential ion
heating. I will also present a summary of recent theoretical modeling efforts
that seem to explain the time-steady properties of the corona (and the fast and
slow solar wind) in terms of an anisotropic MHD cascade driven by the partial
reflection of low-frequency Alfven waves propagating along the superradially
expanding solar magnetic field. Complete theoretical models are difficult to
construct, though, because many of the proposed physical processes act on a
multiplicity of spatial scales (from centimeters to solar radii) with feedback
effects not yet well understood. This paper is thus a progress report on
various attempts to couple these disparate scales.

3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex