Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Strands and braids in narrow planetary rings: A scattering system
  approach   We address the occurrence of narrow planetary rings and some of their
structural properties, in particular when the rings are shepherded. We consider
the problem as Hamiltonian {\it scattering} of a large number of
non-interacting massless point particles in an effective potential. Using the
existence of stable motion in scattering regions in this set up, we describe a
mechanism in phase space for the occurrence of narrow rings and some
consequences in their structure. We illustrate our approach with three
examples. We find eccentric narrow rings displaying sharp edges, variable width
and the appearance of distinct ring components (strands) which are spatially
organized and entangled (braids). We discuss the relevance of our approach for
narrow planetary rings.

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The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph