Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measuring Dark Matter Substructure with Galaxy-Galaxy Flexion Statistics   It is of great interest to measure the properties of substructures in dark
matter halos at galactic and cluster scales. Here we suggest a method to
constrain substructure properties using the variance of weak gravitational
flexion in a galaxy-galaxy lensing context. We show the effectiveness of
flexion variance in measuring substructures in N-body simulations of dark
matter halos, and present the expected galaxy-galaxy lensing signals. We show
the insensitivity of the method to the overall galaxy halo mass, and predict
the method's signal-to-noise for a space-based all-sky survey, showing that the
presence of substructure down to 10^9 M_\odot halos can be reliably detected.

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The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
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The categories of this paper are: supr-con
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
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The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
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The categories of this paper are: eess
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The categories of this paper are: nucl-ex
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The categories of this paper are: physics
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
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The categories of this paper are: plasm-ph