arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2103.08510astro-ph.COgr-qc
收藏

快速射电暴透镜效应对不同质量分布的原始黑洞丰度的约束

Constraints on the abundance of primordial black holes with different mass distributions from lensing of fast radio bursts

Huan Zhou, Zhengxiang Li, Zhiqi Huang, He Gao, Lu Huang

摘要:

原始黑洞(PBH)一直被认为是暗物质的一部分,但在很宽的质量范围内,包括恒星质量范围($1-100~M_{\odot}$),这种可能性一直受到限制。然而,由于LIGO-Virgo引力波天文台对黑洞双星合并事件的发现,人们对恒星质量窗内的黑洞双星又重新产生了兴趣。快速射电暴(FRB)是一种持续时间为毫秒级、全天发生率极高的明亮射电瞬变现象。这些爆发的透镜效应已被提出作为一个最佳的探针,以限制在恒星质量范围内的PBH的丰度。在本文中,我们首先调查的约束条件的丰富的PBH从最新的$593$ FRB观测的单色质量分布和其他三个流行的扩展质量分布有关的不同形成机制的PBH。研究发现,目前公开的FRB观测的约束条件比现有的引力波探测的约束条件相对较弱。此外,我们预测了未来FRB观测对PBH丰度的约束能力,考虑到不同质量分布的PBH和不同的红移分布的FRB。最后,我们发现参数空间对含$\overline{Δt}\leq1 ~\rm ms$的$\sim10^5$ FRB的扩展质量分布的约束与对引力波事件的约束是相当的.可以预见,即将到来的互补多信使观测将产生相当大的限制PBH在这个有趣的质量窗口的可能性。

英文摘要:

Primordial black holes (PBHs) has been considered to form a part of dark matter for a long time but the possibility has been poorly constrained over a wide mass range, including the stellar mass range ($1-100~M_{\odot}$). However, due to the discovery of merger events of black hole binaries by LIGO-Virgo gravitational wave observatories, the interest for PBHs in the stellar mass window has been aroused again. Fast radio bursts (FRBs) are bright radio transients with millisecond duration and very high all-sky occurrence rate. Lensing effect of these bursts has been proposed as one of the optimal probes for constraining the abundance of PBHs in the stellar mass range. In this paper, we first investigate constraints on the abundance of PBHs from the latest $593$ FRB observations for both the monochromatic mass distribution and three other popular extended mass distributions related to different formation mechanisms of PBHs. It is found that constraints from currently public FRB observations are relatively weaker than those from existing gravitational wave detections. Furthermore, we forecast constraining power of future FRB observations on the abundance of PBHs with different mass distributions of PBHs and different redshift distributions of FRBs taken into account. Finally, We find that constraints of parameter space on extended mass distributions from $\sim10^5$ FRBs with $\overline{Δt}\leq1 ~\rm ms$ would be comparable with what can be constrained from gravitational wave events. It is foreseen that upcoming complementary multi-messenger observations will yield considerable constraints on the possibilities of PBHs in this intriguing mass window.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑