Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Analysis of 3D MHD Instability of Antisolar Latitudinal Differential
  Rotation in F, G and K stars   Motivated by observations that only a very few stars have been found to have
antisolar differential rotation, much weaker in amplitude than that of the Sun,
we analyze the stability of antisolar and solar type latitudinal differential
rotations in the tachoclines of typical F,G and K stars. We employ two
three-dimensional thin shell models, one for a Boussinesq but non-hydrostatic
system, the other for a hydrostatic but non-Boussinesq system. We find that, in
general, the combination of toroidal field band and differential rotation is
more unstable, and unstable for lower toroidal fields, for antisolar than for
solar-type differential rotation. In the antisolar case, the instability is
always found to weaken the differential rotation, even if the primary energy
source for the instability is the magnetic field. This favors surface antisolar
differential rotations in stars being weaker than solar types, if the
instability in the tachocline is felt at the surface of the star. This is most
likely to happen in F stars, whose convection zones are much thinner than they
are in G and K stars. This effect could help explain why the antisolar
differential rotations that have been found are very weak compared to the Sun.

25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics