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Dark Matter Spikes and Annihilation Radiation from the Galactic Center

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arxiv astro-ph/0201376 v3 pith:7WUP2FDR submitted 2002-01-22 astro-ph hep-ph

David Merritt , Milos Milosavljevic , Licia Verde , Raul Jimenez (Rutgers University) This is my paper
classification astro-phhep-ph
keywords annihilationcenterdarkgalacticmattermergerscentraldensity
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The annihilation rate of weakly interacting cold dark matter particles at the galactic center could be greatly enhanced by the growth of a density spike around the central supermassive black hole (SBH). Here we discuss the effects of hierarchical mergers on the central spike. Mergers between halos containing SBHs lead to the formation of SBH binaries which transfer energy to the dark matter particles, lowering their density. The predicted flux of annihiliation photons from the galactic center is several orders of magnitude smaller than in models that ignore the effects of SBHs and mergers. Measurement of the annihilation radiation could in principle be used to constrain the merger history of the galaxy.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. A metric solution for rotating black holes embedded in dark matter halos with central spikes

    gr-qc 2026-05 unverdicted novelty 7.0 of 10

    A rotating black-hole metric with a dark-matter halo is derived, but the proposed halo profiles do not make the spacetime asymptotically flat as claimed.

  2. Dark matter environments and safeguards for spacetime inference from horizon scale interferometry

    gr-qc 2026-07 conditional novelty 6.0 of 10

    Using public 2017 M87* closure data, a frozen Kerr source fails an absolute adequacy test and the differential tidal-charge response fails numerical convergence, so no posterior or bound is reported.

  3. Ringdown Signatures of Dehnen Dark Matter Halos: Fluid Modes and Detectability with Space-Based Detectors

    gr-qc 2026-05 unverdicted novelty 5.0 of 10

    Numerical ringdown waveforms for black holes in Dehnen dark matter profiles are generated and analyzed for detectability and parameter inference using second-generation TDI in space-based detectors such as LISA, Taiji...

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