天文学家发现“隐形”恒星是如此暗淡,以至于我们根本看不到它们

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天文学家发现“隐形”恒星是如此暗淡,以至于我们根本看不到它们

In July and August of 2016, astronomers noticed something really strange in the data from the Gaia space observatory.

2016年7月和8月,天文学家在盖亚空间天文台的数据中发现了一些非常奇怪的东西。

A distant star oddly brightened, then dimmed.

一颗遥远的星星奇怪地变亮了,然后变暗了。

A few weeks later, it brightened again, and dimmed again.

几个星期后,它又变亮了,又变暗了。

This odd behaviour wasn\'t because of anything the star was doing; rather, the gravity of an invisible object between us and it was warping the fabric of space-time, magnifying the star\'s light as it passed through.

这种奇怪的行为并不是因为恒星所做的任何事情;而是因为我们和它之间的无形物体的引力扭曲了时空的结构,放大了恒星通过时的光线。

Now astronomers have figured out what that invisible object is: a binary star 2,544 light-years away that\'s so dim we can\'t see it at all.

现在天文学家已经弄清楚了这个看不见的物体是什么:一颗距离我们2544光年远的双星,它太暗了,我们根本看不见它。

Yet, based on the way the star\'s gravity magnifies light, astronomers were able to calculate its mass, distance and orbit of the system.

然而,基于恒星的引力放大光的方式,天文学家能够计算出它的质量,距离和系统的轨道。

These techniques, they say, could be a way to locate other hidden massive objects in the Milky Way galaxy - such as the estimated millions of lone stellar mass black holes out there.

他们说,这些技术可能是定位银河系中其他隐藏的大质量物体的一种方法-例如估计那里有数百万个孤独的恒星质量黑洞。

The big clue as to the nature of the system, according to a team of astronomers, was the repeated brightening and dimming of the source object.

根据一组天文学家的说法,关于该系统性质的一大线索是源物体的反复变亮和变暗。

The event has since been named Gaia16aye.

这项活动后来被命名为Gaia16aye。

\"If you have a single lens, caused by a single object, there would be just a small, steady rise in brightness and then there would be a smooth decline as the lens passes in front of the distant source and then moves away,\" said astronomer Łukasz Wyrzykowski from the University of Warsaw in Poland.

波兰华沙大学的天文学家Łukasz Wyrzykowski说:“如果你只有一个镜头,由一个物体引起,那么亮度只会有一个小的,稳定的上升,然后随着镜头经过远处的光源然后移动,就会有一个平稳的下降。”。

\"In this case, not only did the star brightness drop sharply rather than smoothly, but after a couple of weeks it brightened up again, which is very unusual. Over the 500 days of observation, we have seen it brighten up and decline five times.\"

“在这种情况下,不仅恒星亮度急剧下降,而不是平稳地下降,而且几周后它又变亮了,这是非常不寻常的。在500天的观测中,我们已经看到它变亮和下降了五次。”

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