论文标题
从质量范围的银河黑洞上的微透明的新限制$ 100M _ {\ odot} <m <1000m _ {\ odot} $
New limits from microlensing on Galactic Black Holes in the mass range $10M_{\odot}<M<1000M_{\odot}$
论文作者
论文摘要
我们使用了来自银河系的光环中的中间质量黑洞（BH）的长时间微卷事件，使用了来自EROS-2和MACHO光度测量的档案数据，向大型麦哲伦云。我们结合了这两项调查的数据，以在LMC中为1410万个对象创建一个通用的光曲线数据库，涵盖了10.6年的总持续时间，并且通过四个宽通带测量了通量系列。我们在这些光曲线上进行了微透明搜索，并由2270万个物体的光曲线互补，仅在大约7年中，只有Eros-2或Macho观察到，仅通过两个Pass带测量了Flux系列。考虑到LMC自我镜头和银河系磁盘的贡献，可能性分析使我们得出结论，具有$ 10-100 m _ {\ odot} $的质量的紧凑型物体不能构成标准halo总质量的$ \ sim 15 \％15 \％$（$ 95 \％\％$ fusits $ \％\％）。我们的分析敏感性较重，尽管我们仍然排除了halo的$ \ sim 50 \％$由$ \ sim 1000 m _ {\ odot} $ bhs制成。结合以前的EROS结果，可以获得$ \ sim 15 \％$的上限总halo质量的$ \％$，以贡献质量范围$ 10^{ - 6} -6} -10^2 m _ {\ odot} $的紧凑型光环对象的贡献。
We have searched for long duration microlensing events originating from intermediate mass Black Holes (BH) in the halo of the Milky Way, using archival data from EROS-2 and MACHO photometric surveys towards the Large Magellanic Cloud. We combined data from these two surveys to create a common database of light curves for 14.1 million objects in LMC, covering a total duration of 10.6 years, with flux series measured through four wide passbands. We have carried out a microlensing search on these light curves, complemented by the light curves of 22.7 million objects, observed by EROS-2 only or MACHO only over about 7 years, with flux series measured through only two passbands. A likelihood analysis, taking into account LMC self lensing and Milky Way disk contributions allows us to conclude that compact objects with masses in the range $10 - 100 M_{\odot}$ cannot make up more than $\sim 15\%$ of a standard halo total mass (at $95\%$ confidence level). Our analysis sensitivity weakens for heavier objects, although we still exclude that $\sim 50\%$ of the halo be made of $\sim 1000 M_{\odot}$ BHs. Combined with previous EROS results, an upper limit of $\sim 15\%$ of the total halo mass can be obtained for the contribution of compact halo objects in the mass range $10^{-6} - 10^2 M_{\odot}$.
