Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A generalized two-component model of solar wind turbulence and ab initio
  diffusion mean free paths and drift lengthscales of cosmic rays   We extend a two-component model for the evolution of fluctuations in the
solar wind plasma so that it is fully three-dimensional (3D) and also coupled
self-consistently to the large-scale magnetohydrodynamic (MHD) equations
describing the background solar wind. The two classes of fluctuations
considered are a high-frequency parallel-propagating wave-like piece and a
low-frequency quasi-two-dimensional component. For both components, the
nonlinear dynamics is dominanted by quasi-perpendicular spectral cascades of
energy. Driving of the fluctuations, by, for example, velocity shear and pickup
ions, is included. Numerical solutions to the new model are obtained using the
Cronos framework, and validated against previous simpler models. Comparing
results from the new model with spacecraft measurements, we find improved
agreement relative to earlier models that employ prescribed background solar
wind fields. Finally, the new results for the wave-like and
quasi-two-dimensional fluctuations are used to calculate ab initio diffusion
mean free paths and drift lengthscales for the transport of cosmic rays in the
turbulent solar wind.

9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ