银河中心射电弧
(原标题: The Galactic Center Radio Arc)
2023-04-03
浏览次数: 15
是什么导致了银河系中心附近这种不寻常的弯曲结构？在这张射电图像的上方倾斜的长长的平行射线被统称为银河中心射电弧线，它们从银道面指向我们。射电弧线通过奇怪的弯曲细丝与银河系中心相连，这些细丝被称为拱门。右下角明亮的射电结构围绕着银河系中心的一个黑洞，被称为人马座a *。一种起源假说认为，射电弧和拱门之所以有它们的几何形状，是因为它们含有沿恒定磁场线流动的热等离子体。来自美国宇航局钱德拉x射线天文台的图像显示，等离子体与附近的冷气体云发生碰撞。
查看原文解释
What causes this unusual curving structure near the center of our Galaxy? The long parallel rays slanting across the top of the featured radio image are known collectively as the Galactic Center Radio Arc and point out from the Galactic plane. The Radio Arc is connected to the Galactic Center by strange curving filaments known as the Arches. The bright radio structure at the bottom right surrounds a black hole at the Galactic Center and is known as Sagittarius A*. One origin hypothesis holds that the Radio Arc and the Arches have their geometry because they contain hot plasma flowing along lines of a constant magnetic field. Images from NASA's Chandra X-ray Observatory appear to show this plasma colliding with a nearby cloud of cold gas.