Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The radial density profile of Saturn's A ring   In this work, we model the radial density profile of the outer A ring of
Saturn observed with Cassini cameras (Tiscareno & Harris 2018): An axisymmetric
diffusion model has been developed, accounting for the outward viscous flow of
the ring material, and the counteracting inward drift caused by resonances of
the planet's large outer moons. It has been generally accepted that the 7:6
resonance of Janus alone confines the outer A ring which, however, was
disproved by Tajeddine et al. (2017). We show that the step-like density
profile of the outer A ring is predominantly defined by the discrete
first-order resonances of Janus, the 5:3 second-order resonance of Mimas, and
the overlapping resonances of Prometheus and Pandora.

15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
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The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
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The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci