引力透镜

The long arcs in the optical image are caused by gravitational lensing of background galaxies by matter in the galaxy cluster, the largest system of such arcs ever found.

在可见光图像中巨长的弧线是由于背景巨大质量星系群的引力透镜所导致的，如此巨大系统中的弧线还从没见过。

Employed by consortia that operate global networks of telescopes (the Optical Gravitational Lensing Experiment and Microlensing Observations in Astrophysics), microlensing allows continuous monitoring for subtle brightening of far-distant stars as a relatively nearby star passes in front of them.

天文协会启动全球的望远镜网络，利用微引力透镜效应，可以连续监视诸多远距离恒星微妙的亮度增加情况。当一颗较近的恒星在遥远的恒星前面经过时，较远恒星的亮度就会有所增加。

Orbiting a Red Dwarf Star Image of the Day Gallery Orbiting a Red Dwarf Star This artist's concept of a gas giant planet orbiting a red dwarf K star shows a planet has not been directly imaged , but its presence was detected in 2003 microlensing observations of a field star in our galaxy .

此图本意是拍摄一颗环绕红矮星K运行的由气体组成的巨大行星，但并未直接对其成像，不过该行星的踪迹在2003年针对银河系中恒星带的引力透镜现象进行观测时被发现。

This natural telescope is a gravitational lens.

这个天文的望远镜就是引力透镜。

As the two clusters that formed MACSJ0025 (each almost a whopping quadrillion times the mass of our Sun) merged at speeds of millions of kilometres per hour, hot gas in the two clusters collided and slowed down, but the dark matter passed right through this smash-up.

图中所示，蓝色的部份显示为暗物质，是由哈勃所得的数据以引力透镜效应的方法获取；而粉红色的部份则是正常物质，正常物质透过星系团的气体放出X射线所表现，并由钱德拉X射线天文台所捕捉。

Another method, called microlensing--in which a planet's gravity momentarily brightens a background star by bending its passing light--is particularly good for detecting planets more distant from their stars and in principle could spot lightweights with masses down to that of Earth.

另一种方法即所谓的透镜--其中一颗行星的引力通过弯曲经过的光线瞬间增亮背后的恒星—-对于探测距离恒星更遥远的行星是特别好的，并且在原则上可以透过降落到地球上的物质发现轻量级的行星。

This matrix would be an important input to the modeling of this GL system.

此矩阵为建立PKS 1830-211的引力透镜模型提供了进一步的信息。

Do not gum up the work by telling mother what we are going to do .

别告诉母亲我们要干的事，那会把事情搞糟的。

In recent years, application of the partial prestressed concrete beam s is developed.

近年来，随着部分预应力砼梁应用的推广，发现我国规范所采用的名义拉应力法的计算结果不稳定。