论文标题
集群中的重力镜头和微透明：簇作为暗物质望远镜
Gravitational Lensing and Microlensing in Clusters: Clusters as Dark Matter Telescopes
论文作者
论文摘要
重力镜头是由于前景源偏转光线引起的背景物体的亮度。丰富的星系簇是非常有效的晶状体，因为它们是集中浓缩的。这种天然引力望远镜为我们提供了高红移的强烈放大星系，否则太微弱而无法检测或分析。有了镜头的提升，我们可以研究“黑暗时代”结束时闪耀的星系。我们建议利用大型视野和深度提供的机会，以搜索群集临界曲线附近的前景簇放大的来源，在这些曲线的附近，增强功能可以是亮度数十个。另一个方面是微透镜（ML），我们希望在数周到几年的时间尺度上继续对许多银河球状簇进行调查，以搜索从行星到假设的中间质量黑洞（IMBH）的ML事件。
Gravitational lensing is brightening of background objects due to deflection of light by foreground sources. Rich clusters of galaxies are very effective lenses because they are centrally concentrated. Such natural Gravitational Telescopes provide us with strongly magnified galaxies at high redshifts otherwise too faint to be detected or analyzed. With a lensing boost, we can study galaxies shining at the end of the `Dark Ages'. We propose to exploit the opportunity provided by the large field of view and depth, to search for sources magnified by foreground clusters in the vicinity of the cluster critical curves, where enhancements can be of several tens in brightness. Another aspect is microlensing (ML), where we would like to continue our survey of a number of Galactic globular clusters over time-scales of weeks to years to search for ML events from planets to hypothesized central intermediate-mass black holes (IMBH).
