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The dwarf spheroidal galaxies (dSph) of the Milky Way are among the mostattractive targets for indirect searches of dark matter. In this work, wereconstruct the dark matter annihilation (J-factor) and decay profiles for thenewly discovered dSph Reticulum II. Using an optimized spherical Jeans analysisof kinematic data obtained from the Michigan/Magellan Fiber System (M2FS), wefind Reticulum II's J-factor to be among the largest of any Milky Way dSph. Wehave checked the robustness of this result against several ingredients of theanalysis. Unless it suffers from tidal disruption or significant inflation ofits velocity dispersion from binary stars, Reticulum II may provide a uniquewindow on dark matter particle properties.

Dark matter annihilation and decay profiles for the Reticulum II dwarf spheroidal galaxy