Corpus ID: 235490245

Constraining Dark Matter Microphysics with the Annihilation Signal from Subhalos

  title={Constraining Dark Matter Microphysics with the Annihilation Signal from Subhalos},
  author={Jack Runburg and Eric J. Baxter and Jason Kumar},
In the cold dark matter scenario, galactic dark matter halos are populated with a large number of smaller subhalos. Previous work has shown that dark matter annihilations in subhalos can generate a distinctive, non-Poisson signal in the gamma-ray photon counts probability distribution function (PDF). Here we show that the gamma-ray PDF also carries information about the velocity dependence of the dark matter annihilation cross section. After calculating the PDF assuming s-wave and Sommerfeld… 

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