气泡将原初黑洞踢出以形成更多双星
广义相对论与量子宇宙学
2025-05-26 v3 宇宙学与河外天体物理
高能物理 - 唯象学
摘要
原初黑洞(PBH)可能在宇宙学一级相变之前形成,导致PBH与气泡壁之间不可避免的碰撞。在本快报中,我们首次利用全数值相对论模拟了膨胀标量壁穿过黑洞的协同演化。这种黑洞-气泡壁碰撞产生了多种深远影响,包括PBH质量增长、引力波辐射以及动量反冲——后者赋予PBH额外速度,使PBH双星的形成率大约翻倍,从而加强了对PBH丰度的观测约束。
引用
@article{arxiv.2406.05838,
title = {Bubbles kick off primordial black holes to form more binaries},
author = {Zi-Yan Yuwen and Cristian Joana and Shao-Jiang Wang and Rong-Gen Cai},
journal= {arXiv preprint arXiv:2406.05838},
year = {2025}
}
备注
v1, 5 pages + supplemental material; v2, 5-page main text (peak frequency estimation for GWs from PBH-bubble collisions is added) + 8-page largely extended supplemental material with details in numerical simulations (including numerical methods, initial data, convergence tests, and long-term evolutions); v3, version accepted by Physical Review Research