论文标题
将超光原始黑洞探测为暗物质候选人
Probing Ultra-light Primordial Black Holes as a Dark Matter Candidate
论文作者
论文摘要
暗物质（DM）在我们的宇宙中无处不在。尽管它丰富了，但DM的微观身份仍然是一个谜。原始黑洞（PBHS）可能是通过早期宇宙中大密度扰动的重力崩溃而形成的，是最早且可行的DM候选者之一。最近的研究表明，PBHs可以构成广泛质量的DM密度的大部分甚至整个部分。在这里，我们将PBHS上的观察性约束简要介绍为DM，集中在超光质量窗口上。超光PBHS通过鹰辐射散发颗粒，可以通过观察到各种空间中的这种霍克斯蒸发颗粒以及基于地面的探测器来探测。我们还概述了下一代伽马射线望远镜如何通过探测低能光子来对超轻质PBH DM设定严格的排除限制。
Dark Matter (DM) is omnipresent in our universe. Despite its abundance, the microscopic identity of DM still remains a mystery. Primordial black holes (PBHs), possibly formed via gravitational collapse of large density perturbations in the early universe, are one of the earliest proposed and viable DM candidates. Recent studies indicate that PBHs can make up a large or even entire fraction of the DM density for a wide range of masses. Here, we briefly review the observational constraints on PBHs as DM, concentrating on the ultra-light mass window. Ultra-light PBHs emit particles via Hawking radiation and can be probed by observing such Hawking evaporated particles in various space as well as ground based detectors. We also outline how next-generation gamma ray telescopes can set a stringent exclusion limit on ultra-light PBH DM by probing low energy photons.
