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 |
巻 | 102 |
号 | 4 |
DOI | |
出版ステータス | Published - 2020 8月 15 |
ASJC Scopus subject areas
- 物理学および天文学(その他)