Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Source Ellipticity and the Statistics of Lensed Arcs   The statistics of gravitationally lensed arcs, which can be used for a
variety of cosmological tests, are sensitive to the intrinsic shapes of the
source galaxies. I present an analytic formalism that makes it simple to
include elliptical sources in analytic calculations of lens statistics. For
cuspy lens models, sources with an axis ratio of 2:1 enhance the total number
of arcs longer than 10:1 by a factor of order two, while modestly decreasing
the number ratio of radial arcs to tangential arcs. Source ellipticity is
therefore an important systematic effect in detailed quantitative studies, but
it should not hinder cosmological applications such as attempts to constrain
cluster dark matter profiles with arc statistics.

26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
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The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
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The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
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The categories of this paper are: acc-phys
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The categories of this paper are: quant-ph
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th