Constraining the initial primordial black hole clustering with CMB distortion

2021/03/31 by Valerio De Luca, V. De Luca, Gabriele Franciolini +3
Physics and Astronomy · #Astrophysics #Binary black hole #Black Holes and Theoretical Physics #Black hole (networking) #Cluster analysis #Cosmic microwave background #Cosmology and Gravitation Theories #Distortion (music) #Gravitational wave #Non-Gaussianity #Physics #Primordial black hole #Pulsars and Gravitational Waves Research #Quantum mechanics #astro-ph.CO #gr-qc #hep-ph

paper · pdf · doi:10.1103/physrevd.104.063526

published as Phys. Rev. D 104, 063526 (2021) · 6 pages, 2 figures. v2: matching published version

openalex created_date 2021/04/13 · arxiv created 2021/09/03 · openalex publication_date 2021/09/14 · arxiv updated 2021/09/22 · openalex updated_date 2026/08/06

Abstract

The merger rate of primordial black holes depends on their initial clustering. In the absence of primordial non-Gaussianity correlating short and large scales, primordial black holes are distributed \`a la Poisson at the time of their formation. However, primordial non-Gaussianity of the local type may correlate primordial black holes on large scales. We show that future experiments looking for cosmic microwave background \ensuremathμ distortion would test the hypothesis of initial primordial black hole clustering induced by local non-Gaussianity, while existing limits already show that significant non-Gaussianity is necessary to induce primordial black hole clustering.

Citations

• The Cosmic Microwave Background Spectrum from the FullCOBEFIRAS Data Set
• Non-Gaussianity from Inflation: Theory and Observations
• Black hole explosions?
• Gravitational Waves from Coalescing Black Hole MACHO Binaries
• Features and new physical scales in primordial observables: Theory and observation
• Did LIGO detect dark matter?
• The clustering of massive Primordial Black Holes as Dark Matter: Measuring their mass distribution with advanced LIGO
• Formation and evolution of primordial black hole binaries in the early universe
• Spectral Distortions of the CMB as a Probe of Inflation, Recombination, Structure Formation and Particle Physics
• Primordial Black Holes as a dark matter candidate
• Planck2018 results
• GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run