标题： 中微子和正电子对旋转原初黑洞暗物质的约束 显示英文标题

标题： Neutrino and positron constraints on spinning primordial black hole dark matter

摘要： 角动量是黑洞的基本属性，已知其对黑洞的蒸发速率有显著影响。 最近有人提出原初黑洞可能具有显著的自旋。 我们对通过搜索弥漫超新星中微子背景和观测银河系中心正电子的511 keV伽马射线线来探测具有不可忽略自旋的原初黑洞进行了全面研究，并设定了具有竞争力的限制。 与非自旋的原初黑洞相比，自旋的原初黑洞被探测的质量范围略高。 我们利用中微子得到的限制比由于弥漫伽马射线背景得到的限制稍弱。 我们发现，对于自旋的原初黑洞，在较低质量范围内，正电子的限制通常比非自旋的原初黑洞弱，而在较高质量范围内则更强。 对于质量大于几$\times \, 10^{16}$g 的原初黑洞，它们的限制通常比从弥漫伽马射线测量得到的限制更强。 显示英文摘要

摘要： Angular momentum is a fundamental property of a black hole and is known to have a strong effect on its evaporation rate. It has recently been postulated that primordial black holes can have substantial spin. We conduct a comprehensive study of the detectability of primordial black holes with non-negligible spin, via the searches for the diffuse supernova neutrino background and observation of the 511 keV gamma-ray line from positrons in the Galactic center, setting competitive constraints. Spinning primordial black holes are probed up to a slightly higher mass range compared to non-spinning ones. Our constraint using neutrinos is slightly weaker than that due to the diffuse gamma-ray background. We find that the positron constraints are typically weaker in the lower mass range and stronger in the higher mass range for the spinning primordial black holes compared to the non-spinning ones. They are generally stronger than those derived from the diffuse gamma-ray measurements for primordial black holes having masses greater than a few $\times \, 10^{16}$g.