Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dark matter annihilation and decay profiles for the Reticulum II dwarf
  spheroidal galaxy   The dwarf spheroidal galaxies (dSph) of the Milky Way are among the most
attractive targets for indirect searches of dark matter. In this work, we
reconstruct the dark matter annihilation (J-factor) and decay profiles for the
newly discovered dSph Reticulum II. Using an optimized spherical Jeans analysis
of kinematic data obtained from the Michigan/Magellan Fiber System (M2FS), we
find Reticulum II's J-factor to be among the largest of any Milky Way dSph. We
have checked the robustness of this result against several ingredients of the
analysis. Unless it suffers from tidal disruption or significant inflation of
its velocity dispersion from binary stars, Reticulum II may provide a unique
window on dark matter particle properties.

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The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
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The categories of this paper are: bayes-an
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The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
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The categories of this paper are: stat
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The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
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The categories of this paper are: plasm-ph
2
The categories of this paper are: math
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The categories of this paper are: ao-sci
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The categories of this paper are: atom-ph