Threshold of primordial black hole formation in nonspherical collapse

Chul Moon Yoo, Tomohiro Harada, Hirotada Okawa

研究成果: Article査読

6 被引用数 (Scopus)

抄録

We perform (3+1)-dimensional simulations of primordial black hole (PBH) formation starting from the spheroidal superhorizon perturbations. We investigate how the ellipticity (prolateness or oblateness) affects the threshold of PBH formation in terms of the peak amplitude of curvature perturbation. We find that, in the case of the radiation-dominated universe, the effect of ellipticity on the threshold is negligibly small for large amplitude of perturbations expected for PBH formation.

本文言語English
論文番号043526
ジャーナルPhysical Review D
102
4
DOI
出版ステータスPublished - 2020 8 15

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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