IXPE探索黑洞喷流
(原标题: IXPE Explores a Black Hole Jet)
2025-05-09
浏览次数: 20
黑洞是如何产生x射线的？美国宇航局IXPE卫星最近拍摄的数据在回答这个长期存在的问题方面取得了重大进展。x射线不能离开黑洞，但它们可以在附近的高能环境中产生，特别是由向外移动的粒子射流产生。通过观察从BL Lac星系中心的超大质量黑洞（称为blazar）附近发出的x射线，发现这些x射线缺乏明显的极化，这是由高能电子而不是质子产生的。在这幅艺术插图中，一股强大的喷流从环绕黑洞的橙色吸积盘中散发出来。了解宇宙中高能量的过程有助于人类理解发生在地球上或地球附近的类似过程。把它放在一起：当天的天文学难题
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How do black holes create X-rays? Answering this long-standing question was significantly advanced recently with data taken by NASA’s IXPE satellite. X-rays cannot exit a black hole, but they can be created in the energetic environment nearby, in particular by a jet of particles moving outward. By observing X-ray light arriving from near the supermassive black hole at the center of galaxy BL Lac, called a blazar, it was discovered that these X-rays lacked significant polarization, which is expected when created more by energetic electrons than protons. In the featured artistic illustration, a powerful jet is depicted emanating from an orange-colored accretion disk circling the black hole. Understanding highly energetic processes across the universe helps humanity to understand similar processes that occur on or near our Earth. Put it All Together: Astronomy Puzzle of the Day