超级军网古老星系间年轻恒星构成的螺旋桥-----离散天体引力透镜 ...
来源：百度文库 编辑：超级军网 时间：2024/04/28 07:14:17
http://hubblesite.org/newscenter/archive/releases/2014/26/
哈勃官网，News Release Number: STScI-2014-26
July 10, 2014 10:00 AM (EDT)July 10, 2014: It seems like our compulsive universe can be downright capricious when it comes to making oddball-looking things in the cosmos. The latest surprise to Hubble astronomers is a 100,000-light-year-long structure that looks like a string of pearls twisted into a corkscrew shape. This Slinky-like structure forms a bridge between two giant elliptical galaxies that are colliding. The "pearls" on the Slinky are superclusters of blazing, blue-white, newly born stars. The whole assembly, which looks like a tug-of-war, must result from the gravitational tidal forces present in the collision.
If that's not strange enough, the underlying physics behind the "beads on a string" shape is related to describing the behavior of self-gravitating clumps of gas. It's analogous to the process where rain falls in drops rather than in continuous filaments from clouds. It's called the Jeans instability, and it can play out on distance scales of enormous orders of magnitude — from being inches across to many thousands of light-years in length.
神奇宇宙光怪陆离，新近的观察发现一条长达10万光年的“珍珠纽带”，这条“纽带”在两个快要撞在一起的巨大椭圆星系间形成一条鹊桥，这条“纽带”上的“珍珠”是一些由炽热、蓝白、新生恒星构成的超级星团，就象两个力士间的一场拔河比赛。
这还不足奇，这个珍珠纽带状物背后所隐含的基本物理是一种气体（离散/弥漫）物质内部自约束引力行为的表现。就象雨是一滴一滴穿云而下，不是云中垂下的连续丝线。这叫金斯不稳定性，可以在大跨度尺度（从数英寸到数千光年）范围上产生重要作用。
以上是意译，详情请看http://hubblesite.org/newscenter/archive/releases/2014/26/full/
图象处理一下
显示另一个现象：离散天体的引力透镜效应
http://hubblesite.org/newscenter/archive/releases/2014/26/
哈勃官网，News Release Number: STScI-2014-26
July 10, 2014 10:00 AM (EDT)July 10, 2014: It seems like our compulsive universe can be downright capricious when it comes to making oddball-looking things in the cosmos. The latest surprise to Hubble astronomers is a 100,000-light-year-long structure that looks like a string of pearls twisted into a corkscrew shape. This Slinky-like structure forms a bridge between two giant elliptical galaxies that are colliding. The "pearls" on the Slinky are superclusters of blazing, blue-white, newly born stars. The whole assembly, which looks like a tug-of-war, must result from the gravitational tidal forces present in the collision.
If that's not strange enough, the underlying physics behind the "beads on a string" shape is related to describing the behavior of self-gravitating clumps of gas. It's analogous to the process where rain falls in drops rather than in continuous filaments from clouds. It's called the Jeans instability, and it can play out on distance scales of enormous orders of magnitude — from being inches across to many thousands of light-years in length.
神奇宇宙光怪陆离，新近的观察发现一条长达10万光年的“珍珠纽带”，这条“纽带”在两个快要撞在一起的巨大椭圆星系间形成一条鹊桥，这条“纽带”上的“珍珠”是一些由炽热、蓝白、新生恒星构成的超级星团，就象两个力士间的一场拔河比赛。
这还不足奇，这个珍珠纽带状物背后所隐含的基本物理是一种气体（离散/弥漫）物质内部自约束引力行为的表现。就象雨是一滴一滴穿云而下，不是云中垂下的连续丝线。这叫金斯不稳定性，可以在大跨度尺度（从数英寸到数千光年）范围上产生重要作用。
以上是意译，详情请看http://hubblesite.org/newscenter/archive/releases/2014/26/full/
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图象处理一下
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显示另一个现象：离散天体的引力透镜效应
哇塞！！！牛逼！！！！！引力的鬼斧神工！！！！！！！！！！！！！！
引力能不能形成与透镜媲美的高精度光学成像?
引力能不能形成与透镜媲美的高精度光学成像?
那得靠你努力了。
那得靠你努力了。