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Ruling out thermal dark matter with a black hole induced spiky profile in the M87 galaxy

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arxiv 1505.00785 v2 pith:WW26MNVJ submitted 2015-05-04 astro-ph.GA astro-ph.COastro-ph.HEhep-ph

Thomas Lacroix , Celine Boehm , Joseph Silk This is my paper · ORCID
classification astro-ph.GAastro-ph.COastro-ph.HEhep-ph
keywords darkmatterblackholemassspikeannihilationcross-section
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Using the spectral energy distribution of M87, a nearby radio galaxy in the Virgo cluster, and assuming a supermassive black hole induced spike in the dark matter halo profile, we exclude any dark matter candidate with a velocity-independent (s-wave) annihilation cross-section of the order of sigma v ~ 10^{-26} cm^3/s and a mass up to O(100) TeV. These limits supersede all previous constraints on thermal, s-wave, annihilating dark matter candidates by orders of magnitude, and rule out the entire canonical mass range. We remark in addition that, under the assumption of a spike, dark matter particles with a mass of a few TeV and an annihilation cross-section of ~ 10^{-27} cm^3/s could explain the TeV gamma-ray emission observed in M87. A central dark matter spike is plausibly present around the supermassive black hole at the center of M87, for various, although not all, formation scenarios, and would have profound implications for our understanding of the dark matter microphysics.

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Cited by 5 Pith papers

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

  1. 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.

  2. Constraints on High-Frequency Gravitational Waves from Graviton-Photon Conversion in the M87 Galaxy

    hep-ph 2026-04 conditional novelty 6.0 of 10

    Graviton–photon conversion in M87's magnetic field sets h_c and Ωgw h² limits 1–5 orders of magnitude tighter than Milky Way-based bounds across 10^10–10^27 Hz.

  3. Neutrino Diffusion within Dark Matter Spikes

    hep-ph 2024-12 conditional novelty 6.0 of 10

    Neutrinos diffusing through dense dark matter spikes around supermassive black holes can be delayed by days, but the accompanying flux suppression means dark matter alone probably cannot explain the observed 100+ day ...

  4. Constraining eV-scale axion-like particle dark matter: insights from the M87 Galaxy

    hep-ph 2025-01 conditional novelty 5.0 of 10

    Using M87's infrared-to-ultraviolet observations, the authors constrain the axion-photon coupling for eV-scale axion-like particle dark matter, claiming order-of-magnitude improvements over previous bounds at masses f...

  5. Relaxing Constraints on Dark Matter Annihilation Near the Supermassive Black Hole in M87

    hep-ph 2024-11 conditional novelty 5.0 of 10

    For a Burkert cored M87 halo, the smooth halo, not the black hole density spike, controls the annihilation signal, so M87 constraints on dark matter annihilation weaken by orders of magnitude.

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