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When dark matter interacts with cosmic rays or interstellar matter: A morphological study

Eric Carlson* and Stefano Profumo†

  • Department of Physics and Santa Cruz Institute for Particle Physics, University of California, Santa Cruz, California 95064, USA

  • *erccarls@ucsc.edu
  • †profumo@ucsc.edu
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Phys. Rev. D 92, 063003 – Published 3 September, 2015

DOI: https://doi.org/10.1103/PhysRevD.92.063003

Abstract

Excess emission over expected diffuse astrophysical backgrounds in the direction of the Galactic center region has been claimed at various wavelengths, from radio to gamma rays. Among particle models advocated to explain such observations, a few invoke interactions between dark matter particles and ordinary matter, such as cosmic rays, interstellar gas or free electrons. Depending on the specific interstellar matter particles’ species and energy, such models predict distinct morphological features. In this study we make detailed, model-independent predictions for the morphology of models where the relevant electromagnetic emission is proportional to the product of the dark matter density profile and the density of interstellar matter or cosmic rays. We compare the predicted latitudinal and longitudinal distributions with observations, and provide the associated set of relevant spatial templates.

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Phys. Rev. D 92, 063003– Published 3 September, 2015
  • Received 18 April 2015
Article part of CHORUS

© 2015 American Physical Society

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