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Single and Binary Black Holes and their Influence on Nuclear Structure

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arxiv astro-ph/0301257 v1 pith:JQWLK4WO submitted 2003-01-14 astro-ph gr-qc

David Merritt (Rutgers University) This is my paper · ORCID
classification astro-phgr-qc
keywords binaryblackholesgalaxiesnucleiprofilesbrightcentral
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Massive central objects affect both the structure and evolution of galactic nuclei. Adiabatic growth of black holes generates power-law central density profiles with logarithmic slopes in the range from ~1.5 to ~2.5, in good agreement with the profiles observed in the nuclei of galaxies fainter than visual magnitude -20. However the shallow nuclear profiles of bright galaxies require a different explanation. Binary black holes are an inevitable result of galactic mergers, and the ejection of stars by a massive binary displaces a mass of order the binary's own mass, creating a core or shallow power-law cusp. This model is at least crudely consistent with core sizes in bright galaxies. Uncertainties remain about the effectiveness of stellar- and gas-dynamical processes at inducing coalescence of binary black holes, and uncoalesced binaries may be common in low-density nuclei.

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Cited by 4 Pith papers

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

  1. Dynamics in Nuclear Stellar Clusters: The Impact of Collisions and Disrupted Binaries

    astro-ph.GA 2026-07 conditional novelty 7.0 of 10

    Nuclear star clusters around supermassive black holes develop a collision-regulated density profile n(r) ∝ r^-5/4, independent of whether scattering or gravitational waves drive the orbits.

  2. Did IceCube discover Dark Matter around Blazars?

    astro-ph.HE 2024-12 conditional novelty 6.0 of 10

    Sub-GeV dark matter scattering off protons in blazar jets can produce the IceCube neutrino from TXS 0506+056 while evading current dark matter constraints.

  3. Darkness Visible: N-Body Simulations of Dark Matter Spikes in Hernquist Haloes

    astro-ph.CO 2024-11 reject novelty 6.0 of 10

    N-body simulations of adiabatic black hole growth in Hernquist haloes yield an empirical spike profile with outer halo depletion and a mass-ratio-dependent spike radius that deviates from analytical predictions.

  4. Thermal emission from dark matter-heated neutron stars in the Galactic Center

    astro-ph.HE 2026-06 unverdicted novelty 3.0 of 10

    DM-heated neutron stars in the Galactic Center reach equilibrium temperatures of 10^4-10^6 K but their emission is below detection thresholds due to extinction.

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