Primordial black holes and their gravitational-wave signatures

Abstract

In the recent years, primordial black holes (PBHs) have emerged as one of the most interesting and hotly debated topics in cosmology. Among other possibilities, PBHs could explain both some of the signals from binary black hole mergers observed in gravitational wave detectors and an important component of the dark matter in the Universe. Significant progress has been achieved both on the theory side and from the point of view of observations, including new models and more accurate calculations of PBH formation, evolution, clustering, merger rates, as well as new astrophysical and cosmological probes. In this work, we review, analyse and combine the latest developments in order to perform end-to-end calculations of the various gravitational wave signatures of PBHs. Different ways to distinguish PBHs from stellar black holes are emphasized. Finally, we discuss their detectability with LISA, the first planned gravitational-wave observatory in space.

161 pages, 47 figures, comments welcome

Cited by in corpus (10)

• Curbing PBHs with PTAs
• Realisation of the ultra-slow roll phase in Galileon inflation and PBH overproduction
• Clustering of primordial black holes from quantum diffusion during inflation
• Large fluctuations and Primordial Black Holes
• Unveiling the nonlinear dynamics of a rolling axion during inflation
• Obviating PBH overproduction for SIGWs generated by Pulsar Timing Arrays in loop corrected EFT of bounce
• Angular bispectrum and trispectrum of scalar-induced gravitational waves: all contributions from primordial non-Gaussianity $f_{\mathrm{NL}}$ and $g_{\mathrm{NL}}$
• Constraining the impact of standard model phase transitions on primordial black holes
• Constraining ultra slow roll inflation using cosmological datasets
• Gravitational wave background from primordial black holes in globular clusters