Gravitational waves from primordial black hole mergers

  title={Gravitational waves from primordial black hole mergers},
  author={Martti Raidal and Ville Vaskonen and Hardi Veerm{\"a}e},
  journal={Journal of Cosmology and Astroparticle Physics},
  pages={037 - 037}
We study the production of primordial black hole (PBH) binaries and the resulting merger rate, accounting for an extended PBH mass function and the possibility of a clustered spatial distribution. Under the hypothesis that the gravitational wave events observed by LIGO were caused by PBH mergers, we show that it is possible to satisfy all present constraints on the PBH abundance, and find the viable parameter range for the lognormal PBH mass function. The non-observation of a gravitational wave… 
Constraints on primordial black hole dark matter from Galactic center X-ray observations
Context. Surprisingly high masses of the black holes inferred from the Laser Interferometer Gravitational-Wave Observatory (LIGO) and Virgo gravitational wave measurements have lead to speculations
Primordial black hole dark matter and the LIGO/Virgo observations
  • K. Jedamzik
  • Physics
    Journal of Cosmology and Astroparticle Physics
  • 2020
The LIGO/Virgo collaboration have by now detected the mergers of ten black hole binaries via the emission of gravitational radiation. The hypothesis that these black holes have formed during the
Constraints on primordial black holes
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.
Dark matter simulations with primordial black holes in the early Universe
Primordial Black Holes (PBH) with masses of order $10-30 M_\odot$ have been proposed as a possible explanation of the gravitational waves emission events recently discovered by the LIGO observatory.
Formation and evolution of primordial black hole binaries in the early universe
The abundance of primordial black holes (PBHs) in the mass range 0.1–103 M⊙ can potentially be tested by gravitational wave observations due to the large merger rate of PBH binaries formed in the
Merger rate of primordial black-hole binaries
Primordial black holes (PBHs) have long been a candidate for the elusive dark matter (DM), and remain poorly constrained in the ~20-100 Msun mass range. PBH binaries were recently suggested as the
Merger rates in primordial black hole clusters without initial binaries
Primordial black holes formed through the collapse of cosmological density fluctuations have been hypothesized as contributors to the dark matter content of the Universe. At the same time, their
On the Single-event-based Identification of Primordial Black Hole Mergers at Cosmological Distances
The existence of primordial black holes (PBHs), which may form from the collapse of matter overdensities shortly after the Big Bang, is still under debate. Among the potential signatures of PBHs are
Testing Primordial Black Holes with multi-band observations of the stochastic gravitational wave background
The mass distribution of Primordial Black Holes (PBHs) is affected by drops in the pressure of the early Universe plasma. For example, events in the standard model of particle physics, such as the W
Is GW170817 a multimessenger neutron star-primordial black hole merger?
We investigate the possibility of the gravitational-wave event GW170817 being a light, solar-mass black hole (BH) — neutron star (NS) merger. We explore two exotic scenarios involving primordial


Cosmic microwave background limits on accreting primordial black holes
Interest in the idea that primordial black holes (PBHs) might comprise some or all of the dark matter has recently been rekindled following LIGO’s first direct detection of a binary-black-hole
Primordial Black Holes as Dark Matter
Primordial black holes (PBHs) may readily form during the radiation dominated stages of the universe from the gravitational collapse of horizon-size energy density fluctuations of moderate amplitude.
On the gravitational wave background from black hole binaries after the first LIGO detections
The detection of gravitational waves from the merger of binary black holes by the LIGO Collaboration has opened a new window to astrophysics. With the sensitivities of ground based detectors in the
Probing Primordial Black Hole Dark Matter with Gravitational Waves.
The obtainable independent limits from aLIGO will enable a firm test of the scenario that PBHs make up all of dark matter, and model the shape of the stellar-black-hole mass function and calibrate its amplitude to match the O1 results.
Relic gravitational waves from light primordial black holes
The energy density of relic gravitational waves (GWs) emitted by primordial black holes (PBHs) is calculated. We estimate the intensity of GWs produced at quantum and classical scattering of PBHs,
Massive Primordial Black Holes as Dark Matter and their detection with Gravitational Waves
Massive Primordial Black Holes (MPBH) can be formed after inflation due to broad peaks in the primordial curvature power spectrum that collapse gravitationally during the radiation era, to form
Primordial black holes as biased tracers
Primordial black holes (PBHs) are theoretical black holes which may be formed during the radiation dominant era and, basically, caused by the gravitational collapse of radiational overdensities. It
Primordial Black Hole Scenario for the Gravitational-Wave Event GW150914.
The abundance of PBHs required to explain the suggested lower bound on the event rate roughly coincides with the existing upper limit set by the nondetection of the cosmic microwave background spectral distortion, which implies that the proposed PBH scenario may be tested in the not-too-distant future.