标题： 中微子和正电子对旋转原初黑洞暗物质的限制 显示英文标题

标题： Neutrino and Positron Constraints on Spinning Primordial Black Hole Dark Matter

摘要： 原初黑洞可以具有显著的自旋——这是一个对黑洞蒸发率有强烈影响的基本属性。 我们对具有非忽略自旋的原初黑洞的可探测性进行了全面研究，通过在MeV能段寻找中微子和正电子的方法。 超新星中微子背景搜索以及银河系中心正电子发射的511 keV伽马射线线观测设定了竞争性的限制。 与不旋转的原初黑洞相比，旋转的原初黑洞被探测到的质量范围稍高一些。 我们的中微子约束比由于弥散伽马射线背景的约束稍微弱一些，但互补且稳健。 对于旋转的原初黑洞，相比于不旋转的，我们的正电子约束在较低质量范围内较弱，在较高质量范围内较强。 它们通常比从弥散伽马射线测量得出的原初黑洞的约束更强，特别是对于质量大于几个$\times \, 10^{16}$克的原初黑洞。 显示英文摘要

摘要： Primordial black holes can have substantial spin -- a fundamental property that has a strong effect on its evaporation rate. We conduct a comprehensive study of the detectability of primordial black holes with non-negligible spin, via the searches for the neutrinos and positrons in the MeV energy range. Diffuse supernova neutrino background searches and observation of the 511 keV gamma-ray line from positrons in the Galactic center set 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, but complementary and robust. Our 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.