• Corpus ID: 238634387

Primordial black hole formation for an anisotropic perfect fluid: initial conditions and estimation of the threshold

@inproceedings{Musco2021PrimordialBH,
  title={Primordial black hole formation for an anisotropic perfect fluid: initial conditions and estimation of the threshold},
  author={Ilia Musco and Theodoros Papanikolaou},
  year={2021}
}
This work investigates the formation of primordial black holes within a radiation fluid with an anisotropic pressure. We focus our attention on the initial conditions describing cosmological perturbations on the super horizon regime, using a covariant form of the equation of state in terms of pressure and energy density gradients. The effect of the anisotropy is to modify the initial shape of the cosmological perturbations with respect to the isotropic case. Using the dependence of the… 

Figures from this paper

PBH formation from spherically symmetric hydrodynamical perturbations: a review
Primordial black holes, which could have been formed in the very early Universe due to the collapse of large curvature fluctuations, are nowadays one of the most attractive and fascinating research

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