论文标题
从16年的积分/SPI观察到原始黑洞暗物质的强大限制
Strong constraints on primordial black hole dark matter from 16 years of INTEGRAL/SPI observations
论文作者
论文摘要
我们对内部星系的弥漫性软$γ$ ray发射进行了新的分析，这是通过在积分卫星（SPI）上测量的，并获取了16年的数据。该分析实现了SPI数据的空间模板拟合和改进的仪器背景模型。我们将原始黑洞（PBH）的贡献描述为暗物质（DM）候选者，蒸发成$ \ Mathcal {O} $（1）MEV光子，通过首次将信号的空间分布包括在拟合过程中。未检测到PBH信号，我们设定了最高$ 4 \ times 10^{17} $ G的PBH DM的最大限制，大大关闭了所谓的小行星质量范围。
We present a new analysis of the diffuse soft $γ$-ray emission towards the inner Galaxy as measured by the SPectrometer aboard the INTEGRAL satellite (SPI) with 16 years of data taking. The analysis implements a spatial template fit of SPI data and an improved instrumental background model. We characterize the contribution of Primordial Black Holes (PBH) as dark matter (DM) candidates evaporating into $\mathcal{O}$(1) MeV photons by including, for the first time, the spatial distribution of their signal into the fitting procedure. No PBH signal is detected, and we set the strongest limit on PBH DM for masses up to $4 \times 10^{17}$ g, significantly closing in into the so-called asteroid mass range.
