Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Generation of large-scale magnetic field in convective full-sphere
  cross-helicity dynamo   We study effects of the cross-helicity in the full-sphere large-scale
mean-field dynamo models of the 0.3M star rotating with the period of 10 days.
In exploring several dynamo scenarios which are stemming from the
cross-helicity generation effect, we found that the cross-helicity provide the
natural generation mechanisms for the large-scale scale axisym- metric and
non-axisymmetric magnetic field. Therefore the rotating stars with convective
envelope can produce the large-scale magnetic field generated solely due to the
turbulent cross-helicity effect (we call it {\gamma} 2 -dynamo). Using
mean-field models we compare properties of the large-scale magnetic field
organization that stems from dynamo mechanisms based on the kinetic (associated
with the {\alpha} 2 dynamos) and cross-helicity. For the fully convective
stars, both generation mechanisms can maintain large-scale dynamos even for the
solid body rotation law inside the star. The non-axisymmetric magnetic
configurations become preferable when the cross-helicity and the
{\alpha}-effect operate independently of each other. This corresponds to
situations of the purely {\gamma} 2 or {\alpha} 2 dynamos. Combination of these
scenarios, i.e., the {\gamma} 2 {\alpha} 2 dynamo can generate preferably
axisymmetric, a dipole-like magnetic field of strength several kGs. Thus we
found a new dynamo scenario which is able to generate the axisymmetric magnetic
field even in the case of the solid body rotation of the star. We discuss the
possible applications of our findings to stellar observations.

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The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg