论文标题
闪亮的原始黑洞
Shining Primordial Black Holes
论文作者
论文摘要
我们研究了动机良好的混合暗物质（DM）场景，该场景由主要的热w imp组成，突出了$ su（2）_l $ $ triplet fermion“ winos”的情况，其中一小部分原始黑洞（PBHS）。在Wino动力学脱钩之后，DM颗粒被PBHS捕获，导致今天以银色的Minihalos在银河系中存在PBH。 Wino DM的最强限制来自银河中心Wino an灭的狭窄线伽玛射线。我们详细分析了混合WINO DM场景的可行性，并确定PBHS中DM的限制，假设以银河系为内核的光晕曲线。我们证明，由于当前间接搜索的敏感性已经很大，在$ m _ {\ text {pbh}} \ sim m _ m _ {\ sim m _ {\ odot} $时，在附近的单个衣服上检测wino nih灭的伽马射线信号特征很有可能。类似的结果也应适用于更通用的具有超型Minihalos或其他DM模型的设置，因为DM围绕大型过度和DM歼灭的积聚都是相当通用的过程。
We study the well-motivated mixed dark matter (DM) scenario composed of a dominant thermal WIMP, highlighting the case of $SU(2)_L$ triplet fermion "winos", with a small fraction of primordial black holes (PBHs). After the wino kinetic decoupling, the DM particles are captured by PBHs leading to the presence of PBHs with dark minihalos in the Milky Way today. The strongest constraints for the wino DM come from the production of narrow line gamma rays from wino annihilation in the Galactic Center. We analyse in detail the viability of the mixed wino DM scenario, and determine the constraints on the fraction of DM in PBHs assuming a cored halo profile in the Milky Way. We show that already with the sensitivity of current indirect searches, there is a significant probability for detecting a gamma ray signal characteristic for the wino annihilation in a single nearby dressed PBH when $M_{\text{PBH}} \sim M_{\odot}$, which we refer to as a "shining black hole". Similar results should apply also in more general setups with ultracompact minihalos or other DM models, since the accretion of DM around large overdensities and DM annihilation are both quite generic processes.
