The swallowed spike: the formation of light primordial black hole structures around heavy seeds

arXiv:2606.25031 · astro-ph.CO, hep-ph · Submitted 2026-06-23 · Read on arXiv

Agnese Tolino, Francesca Scarcella, Bradley J. Kavanagh, Valentina De Romeri, Daniele Gaggero

astro-ph.CO, hep-ph

Submitted: 2026-06-23

Comments: 19 pages + appendices, 15 figures; corrected typos

Code: https://github.com/atolino/Light_PBH_spikes

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Benchmark — 8× in this paper · explained in 2 episodes
• Microlensing — 8× in this paper · explained in 2 episodes
• Core — 6× in this paper · explained in 2 episodes
• Decoupling — 6× in this paper · explained in 2 episodes
• Anisotropy — 4× in this paper · explained in 3 episodes
• Clustering — 4× in this paper · explained in 2 episodes
• Abundance — 3× in this paper · explained in 1 episode
• Little Red Dots — 2× in this paper · explained in 2 episodes
• Primordial Black Holes (PBHs) — 2× in this paper · explained in 7 episodes
• Accuracy — 1× in this paper · explained in 1 episode
• Actio — 1× in this paper · explained in 1 episode
• Phase Transitions — 1× in this paper · explained in 2 episodes
• Spectral Distortions — 1× in this paper · explained in 2 episodes
• Velocity Dispersion — 1× in this paper · explained in 2 episodes

Sources

• Constraints on Primordial Black Holes
• Primordial Black Holes as a dark matter candidate
• Primordial Black Holes
• Primordial black holes: constraints, potential evidence and prospects
• Constraints on Earth-mass primordial black holes from OGLE 5-year microlensing events
• Constraining the masses of microlensing black holes and the mass gap with Gaia DR2
• AMPM I. A Targeted Search for Asteroid Mass Primordial Black Hole Microlenses
• AMPM II. A Lunar-Mass Primordial Black Hole Microlensing Candidate in the Milky Way Halo
• Eppur non si trovano Vol. 3: Phoebe -- a Mirage of a Primordial Black Hole
• Spectroscopic confirmation of two luminous galaxies at $z\sim14$
• The rise of the galactic empire: luminosity functions at $z\sim17$ and $z\sim25$ estimated with the MIDIS$+$NGDEEP ultra-deep JWST/NIRCam dataset
• Beyond the first galaxies primordial black holes shine
• The population of merging compact binaries inferred using gravitational waves through GWTC-3
• GWTC-5.0: Observations from the Second Part of the Fourth LIGO-Virgo-KAGRA Observing Run and Updates to the Gravitational-Wave Transient Catalog
• Primordial Black Holes as Dark Matter Candidates
• Revisiting constraints on asteroid-mass primordial black holes as dark matter candidates
• Primordial Black Holes as Silver Bullets for New Physics at the Weak Scale
• Primordial black hole constraints for extended mass functions
• Could MACHOS be Primordial Black Holes formed during the QCD Epoch?
• Primordial black holes with an accurate QCD equation of state

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