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[转载]天文学家第一次观测到黑洞背后的光

已有 1472 次阅读 2021-8-4 14:11 |个人分类:天文及宇宙学|系统分类:科研笔记|文章来源:转载

来自超大质量黑洞后面的光弯曲和 X 射线回波

Schematic of the X-ray reverberation model X-rays are emitted from a corona of energetic particles close to the black hole. Some of these rays reach the observer directly, but some illuminate the inner regions of the accretion disk and are observed reflected from the disk. Strong light bending in the gravitational field around the black hole focuses the rays towards the black hole and onto the inner regions of the disk. Rays reflected from the back of the disk can be bent around the (spinning) black hole, allowing the re-emergence of X-rays from parts of the disk that would classically be hidden behind the black hole.

这些光子从圆盘的远端反射回来，在黑洞周围弯曲并被强大的引力场放大。观察围绕黑洞弯曲的光子证实了广义相对论的一个关键预测。这不是天文学家第一次发现黑洞扭曲光线引起的引力透镜现象，但这是他们第一次看到来自黑洞后方的“光回波”。

来源：https://www.nature.com/articles/s41586-021-03667-0




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