95% CL upper limits on DM annihilation cross section and decay rate are set from polarized and total synchrotron emission in M31, LMC, Draco, Sculptor, and Coma using Planck maps and numerical propagation modeling.
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Polarized and unpolarized synchrotron emission from dark matter in extragalactic targets
95% CL upper limits on DM annihilation cross section and decay rate are set from polarized and total synchrotron emission in M31, LMC, Draco, Sculptor, and Coma using Planck maps and numerical propagation modeling.