# Primordial black holes as dark matter: converting constraints from monochromatic to extended mass distributions

@article{Bellomo2017PrimordialBH, title={Primordial black holes as dark matter: converting constraints from monochromatic to extended mass distributions}, author={Nicola Bellomo and Jos{\'e} Luis Bernal and Alvise Raccanelli and Licia Verde}, journal={Journal of Cosmology and Astroparticle Physics}, year={2017}, volume={2018}, pages={004 - 004} }

The model in which Primordial Black Holes (PBHs) constitute a non-negligible fraction of the dark matter has (re)gained popularity after the first detections of binary black hole mergers. Most of the observational constraints to date have been derived assuming a single mass for all the PBHs, although some more recent works tried to generalize constraints to the case of extended mass functions. Here we derive a general methodology to obtain constraints for any PBH Extended Mass Distribution (EMD…

## 65 Citations

Press–Schechter primordial black hole mass functions and their observational constraints

- PhysicsMonthly Notices of the Royal Astronomical Society
- 2021

We present a modification of the Press–Schechter (PS) formalism to derive general mass functions for primordial black holes (PBHs), considering their formation as being associated with the…

Lyman-α Forest Constraints on Primordial Black Holes as Dark Matter.

- PhysicsPhysical review letters
- 2019

New limits on the PBH abundance are presented, from a comprehensive analysis of high-resolution high-redshift Lyman-α forest data, and predictions to nonmonochromatic PBH mass distributions are extended, ruling out large regions of the parameter space for some of the most viable PBH extended mass functions.

The maximal-density mass function for primordial black hole dark matter

- Physics
- 2018

The advent of gravitational wave astronomy has rekindled interest in primordial black holes (PBH) as a dark matter candidate. As there are many different observational probes of the PBH density…

Constraints on PBH as dark matter from observations: a review

- Physics, Geology
- 2022

: Primordial black holes (PBHs) are a fascinating candidate for being the dark matter, albeit one which has been heavily constrained. This review presents an in depth look at those observational…

Constraints on primordial black holes

- PhysicsReports on progress in physics. Physical Society
- 2021

The constraints on the fraction of the Universe that may have gone into primordial black holes (PBHs) over the mass range 10−5 to 1050 g are updated and even if PBHs make a small contribution to the DM, they could play an important cosmological role and provide a unique probe of the early Universe.

Signatures of primordial black holes as seeds of supermassive black holes

- Physics
- 2017

It is broadly accepted that Supermassive Black Holes (SMBHs) are located in the centers of most massive galaxies, although there is still no convincing scenario for the origin of their massive seeds.…

CMB constraints on ultra-light primordial black holes with extended mass distributions

- Physics
- 2019

We examine the effects ultra-light primordial black holes (PBHs) have on the anisotropies of the cosmic microwave background (CMB). PBHs in the mass range of $10^{15}$ to $10^{17}$ g emit Hawking…

Multi-wavelength astronomical searches for primordial black holes

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2019

If primordial black holes of 𝒪(1–100) M⊙ constitute a significant portion of the dark matter in the Universe, they should be very abundant in our Galaxy. We present here a detailed analysis of the…

Constraining the primordial black hole abundance with 21-cm cosmology

- PhysicsPhysical Review D
- 2019

The discoveries of a number of binary black hole mergers by LIGO and VIRGO has reinvigorated the interest that primordial black holes (PBHs) of tens of solar masses could contribute non-negligibly to…

Primordial black hole merger rates: distributions for multiple LIGO observables

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2020

We have calculated the detectable merger rate of primordial black holes, as a function of the redshift, as well as the binary's mass ratio, total mass and chirp mass (observables that have not…

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