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Gamma-ray searches for dark matter annihilation and decay in dwarf galaxiesrely on an understanding of the dark matter density profiles of these systems.Conversely, uncertainties in these density profiles propagate into the derivedparticle physics limits as systematic errors. In this paper we quantify theexpected dark matter signal from 20 Milky Way dwarfs using a uniform analysisof the most recent stellar-kinematic data available. Assuming that the observedstellar populations are equilibrium tracers of spherically-symmetricgravitational potentials that are dominated by dark matter, we find thatcurrent stellar-kinematic data can predict the amplitudes of annihilationsignals to within a factor of a few for the ultra-faint dwarfs of greatestinterest. On the other hand, the expected signal from several classical dwarfs(with high-quality observations of large numbers of member stars) can belocalized to the ~20% level. These results are important for designingmaximally sensitive searches in current and future experiments using space andground-based instruments.

Dwarf galaxy annihilation and decay emission profiles for dark matter experiments