Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Charged Grains In Saturn's F-Ring: Interaction With Saturn's Magnetic
  Field   Saturn's dynamic F-Ring still presents a challenge for understanding and
explaining the kinematic processes that lead to the changing structure visible
in our observations of this ring. This study examines the effect of Saturn's
magnetic field on the dynamics of micron-sized grains that may become
electrically charged due to interaction with plasma in Saturn's rigidly
corotating magnetosphere. The numerical model calculates the dynamics of
charged dust grains and includes forces due to Saturn's gravitational field,
the plasma polarization electric field, a third order harmonic expansion of
Saturn's magnetic field, and the F Ring's Shepherding moons, Prometheus and
Pandora.

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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-th
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
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The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
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The categories of this paper are: q-fin
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The categories of this paper are: alg-geom
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The categories of this paper are: patt-sol
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The categories of this paper are: adap-org
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The categories of this paper are: cmp-lg
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The categories of this paper are: solv-int
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The categories of this paper are: dg-ga
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The categories of this paper are: funct-an
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The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph