论文标题
超级尖端乌云在原始黑洞周围
Superradiant pion clouds around primordial black holes
论文作者
论文摘要
我们表明，高度旋转的原始黑洞质量$ m \ sim 10^{12} $ kg，可能出生在通货膨胀后的物质主导的时代，可以通过超级不稳定性在其附近产生尖云，并具有密度，直到核物质。我们通过中性亲腐腐烂并将其带电到光子中，尤其是计算它们对各向同性伽玛射线背景的贡献，从而讨论了此过程的电磁特征。这使我们能够将上限放在与霍金蒸发中获得的原始黑洞的丰度上。我们还讨论了直接观察高红移超级散布器中这种云的可能性。
We show that highly spinning primordial black holes of mass $M\sim 10^{12}$ kg, potentially born in a matter-dominated era after inflation, can produce clouds of pions in their vicinity via the superradiant instability, with densities up to that of nuclear matter. We discuss the electromagnetic signatures of this process, via neutral pion decay and charged pion annihilation into photons, computing in particular their contribution to the isotropic gamma-ray background. This allows us to place upper bounds on the abundance of such primordial black holes that are comparable to the ones obtained from Hawking evaporation. We also discuss the possibility of directly observing such clouds in high-redshift superclusters.
