论文标题
原始黑洞和粒子暗物质的整体限制
INTEGRAL constraints on primordial black holes and particle dark matter
论文作者
论文摘要
国际伽马射线天体物理学实验室（积分）卫星对我们银河系的软伽马射线谱进行了前所未有的测量。在这里，我们使用这些测量值来设置对暗物质（DM）的约束，该暗物质（DM）用能量$ e \ of o \约0.02-2 $ MEV腐烂或an灭光子。首先，我们重新审视腐烂或歼灭光子对的粒子DM的约束。特别是，对于腐烂的DM，我们发现先前的限制被大约一个数量级夸大了。我们的新的保守分析发现，DM寿命必须满足$τ\ gtrsim 5 \ times 10^{26} \，{\ rm s} \ times（m_χ/\ rm mev）^{ - 1} $ for DM Masses $M_χ= 0.054-3.6 $ MEV。对于歼灭光子积分的MEV规模的DM设定了迄今为止最强的约束。其次，我们通过其鹰辐射靶向超轻原始黑洞（PBH）。这使得它们显示为腐烂的DM，其光子频谱在$ e \ of 5.77/（8πgm _ {\ rm pbh}）$中，对于质量$ m _ {\ rm pbh} $的PBH。我们使用积分数据来证明，在95 \％c.l.时，质量小于$ 1.2 \ times 10^{17} $ g不能构成所有DM，在超级PBHS上设置了最紧密的绑定。
The International Gamma-Ray Astrophysics Laboratory (INTEGRAL) satellite has yielded unprecedented measurements of the soft gamma-ray spectrum of our Galaxy. Here we use those measurements to set constraints on dark matter (DM) that decays or annihilates into photons with energies $E\approx 0.02-2$ MeV. First, we revisit the constraints on particle DM that decays or annihilates to photon pairs. In particular, for decaying DM, we find that previous limits were overstated by roughly an order of magnitude. Our new, conservative analysis finds that the DM lifetime must satisfy $τ\gtrsim 5\times 10^{26}\,{\rm s}\times (m_χ/\rm MeV)^{-1}$ for DM masses $m_χ=0.054-3.6$ MeV. For MeV-scale DM that annihilates into photons INTEGRAL sets the strongest constraints to date. Second, we target ultralight primordial black holes (PBHs) through their Hawking radiation. This makes them appear as decaying DM with a photon spectrum peaking at $E\approx 5.77/(8πG M_{\rm PBH})$, for a PBH of mass $M_{\rm PBH}$. We use the INTEGRAL data to demonstrate that, at 95\% C.L., PBHs with masses less than $1.2\times 10^{17}$ g cannot comprise all of the DM, setting the tightest bound to date on ultralight PBHs.
