Conveners
The KEK-PH + KEK-Cosmo joint workshop on "Primordial Black Holes": Short talks
- Kazunori Kohri (KEK)
The KEK-PH + KEK-Cosmo joint workshop on "Primordial Black Holes": 1st Invited Talk
- Mukaida Kyohei (KEK)
The KEK-PH + KEK-Cosmo joint workshop on "Primordial Black Holes": 2nd Invited Talk
- Kazunori KOHRI (KEK/Theory)
In this work, we update the peak theory for the estimation of the primordial black hole (PBH) abundance,
particularly by implementing the critical behavior in the estimation of the PBH mass and employing the averaged compaction function for the PBH formation criterion to relax the profile dependence.
We apply our peak theory to a specific non-Gaussian feature called the exponential tail,...
The standard deviation of the initial values of the nondimensional Kerr parameter a∗ of primordial black holes (PBHs) formed in the radiation-dominated phase of the universe is estimated to the first order of perturbation for the narrow power spectrum. Evaluating the angular momentum at turn around based on linearly extrapolated transfer functions and peak theory, we obtain the expression....
Primordial Black Holes might comprise a significant fraction of dark matter in the Universe and can give rise to observable signatures at current and future gravitational wave experiments. First, we review the PBH model and discuss how accretion and clustering may affect the properties of PBH binaries. Second, we confront the PBH model with LIGO/Virgo data showing its upsides and shortcomings,...
Although black holes can be the remnants of dead stars, it is also possible that some are primordial. Such primordial black holes are the unique dark matter candidate which is not a new type of particle, and they could also explain some of the unexpected properties of the black hole mergers that LIGO and Virgo have detected. I will summarise the evidence and (fine-tuning) challenges behind...
