On Ellipsoidal Collapse and Primordial Black-Hole Formation

Abstract

We reinvestigate gravitational ellipsoidal collapse with special focus on its impact on primordial black-hole formation. For a generic model we demonstrate that the abundance and energy density of the produced primordial black holes will be significantly decreased when the non-sphericity of the overdensities is taken into account.

4 pages, 1 figure; v2: minor changes; report number added; v3: references added

References in corpus (9)

• Limits on the Macho Content of the Galactic Halo from the EROS-2 Survey of the Magellanic Clouds
• Dark matter and cosmic structure
• Primordial black hole formation in the radiative era: investigation of the critical nature of the collapse
• Calculating the mass spectrum of primordial black holes
• Separate Universes Do Not Constrain Primordial Black Hole Formation
• Signatures of non-gaussianity in the isocurvature modes of primordial black hole dark matter
• Constraints on amplitudes of curvature perturbations from primordial black holes
• Large curvature perturbations near horizon crossing in single-field inflation models
• The separate universe problem: 40 years on

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