Dark Matter Annihilation at the Galactic Center

Paolo Gondolo and Joseph Silk
Phys. Rev. Lett. 83, 1719 – Published 30 August 1999
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Abstract

Cold dark matter near the galactic center is accreted by the central black hole into a dense spike. Particle dark matter annihilation makes the spike a compact source of photons, electrons, positrons, protons, antiprotons, and neutrinos. The spike luminosity depends on the halo density profile: halos with finite cores have unnoticeable spikes; halos with inner cusps may have spikes so bright that the absence of a neutrino signal from the galactic center already places upper limits on the density slope of the inner halo. Future neutrino telescopes observing the galactic center could probe the inner structure of the dark halo or indirectly find the nature of dark matter.

  • Received 24 March 1999

DOI:https://doi.org/10.1103/PhysRevLett.83.1719

©1999 American Physical Society

Authors & Affiliations

Paolo Gondolo*

  • Max Planck Institut für Physik, Föhringer Ring 6, 80805 Munich, Germany

Joseph Silk

  • Astrophysics, University of Oxford, Keble Road, Oxford, OX1 3RH, United Kingdom
  • and Department of Astronomy and Physics, University of California, Berkeley, California 94720

  • *Email address: gondolo@mppmu.mpg.de
  • Email address: silk@astro.ox.ac.uk

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Vol. 83, Iss. 9 — 30 August 1999

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