论文标题
用鹰辐射确定光原始黑洞的旋转
Determining the spin of light primordial black holes with Hawking radiation
论文作者
论文摘要
我们提出了一种方法，以确定质量范围内原始黑洞（PBH）的质量和旋转，$ 5 \ times 10^7-10^{12} $ kg（基于测量PhotoN Hawking Sumiss Spectrum和Seconderents Photon Hawking Spectrum和Secondy anctery commonty commont and commont ancount and commont ancount anconement and commonty commont anconement and commonty and commonty commonty commonty and commonty and comment ancounty。这是由于该质量范围中的PBH蒸发时旋转（即弦轴）的情况，即无量纲的旋转参数$ \ tilde {a} \ sim 0.1-0.5 $，可以通过数百甚至数千个光轴般的类似光轴的颗粒来实现。因此，测量当前的PBH质量自旋分布可能是对标准模型以外的物理学的重要探测。由于所提出的方法依赖于给定的PBH发出的光子的能量，而不是相关的通量，因此它与PBH-Earth距离无关，并且作为副产品，也可以用于推断后者。
We propose a method to determine the mass and spin of primordial black holes (PBHs) in the mass range $5\times 10^7-10^{12}$ kg (Hawking temperatures $\sim10$ MeV $-200$ GeV), based on measuring the energy of specific features in the photon Hawking emission spectrum, including both primary and secondary components. This is motivated by scenarios where PBHs in this mass range spin up as they evaporate, namely the string axiverse, where dimensionless spin parameters $\tilde{a}\sim 0.1-0.5$ can be achieved through the Hawking emission of hundreds or even thousands of light axion-like particles. Measuring the present PBH mass-spin distribution may thus be an important probe of physics beyond the Standard Model. Since the proposed method relies on the energy of the photons emitted by a given PBH, rather than on the associated flux, it is independent of the PBH-Earth distance and, as a byproduct, can also be used to infer the latter.
