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超大质量黑洞因“消化不良”而喷发物质
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Topic: 超大质量黑洞因“消化不良”而喷发物质 (Read 227 times)
usechain
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超大质量黑洞因“消化不良”而喷发物质
July 12, 2017, 02:10:20 PM
#1
据每日科学网近日消息称,天文学家利用射电望远镜阵列获得的高清晰度图像,发现了一超大质量黑洞因“消化不良”而喷发物质的细节,这一太空中罕见的“病例”令天文学家们震惊不已。
黑洞是宇宙中的庞然大物。一般认为,在所有星系的中心,都存在超大质量黑洞,而横亘在太阳系中央的超大质量黑洞几乎比太阳大400万倍。
此次,由英国曼彻斯特大学天体物理学家领导的小组,在距离地球2000多万光年远的位置,发现了这个位于星系NGC5195中央的超大质量黑洞,其质量相当于太阳质量的1900万倍。星系NGC5195还有一个“块头”较大的同伴NGC5194,引力将它们束缚在一起,由于二者的位置关系,导致有大量物质向NGC5195星系中央黑洞滑落。而这个黑洞却正处于“消化不良”的状态中,喷出了相当多的物质,宛如对着宇宙空间“呕吐”。
研究团队结合了多个波段望远镜的观测结果,包括英国e-MERLIN射电望远镜阵列,以及美国的哈勃望远镜、钱德拉X射线和甚大阵列望远镜等设备的高清晰度图像。他们发现,当物质高速旋转着被黑洞吞噬时,黑洞吸积盘(类似黑洞等致密天体周围,由于物质受到引力作用向中心跌落而形成的盘状结构)会不断发生变化。换句话说,黑洞的“胡吃海塞”,使吸积盘增大,也促使黑洞无法再继续良好地“消化”这些物质,最终使吸积盘破裂,向外喷射出物质。
研究人员解释称,当物质喷出时,接近光速传播的电子与星际介质的磁场相互作用,并以射电波发射能量。冲击波再使星际介质加热膨胀,并从周围的中性氢原子剥离电子形成离子氢,进而产生了哈勃和钱德拉望远镜观测到的弧线,而这是人类可在电磁频谱上看到的、星系尺度上的“大事件”。
frear
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Re: 超大质量黑洞因“消化不良”而喷发物质
July 13, 2017, 02:27:21 AM
#2
喷发出来的物质会不会有什么放射性元素,会不会有辐射?
jiojio99
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⇾
Re: 超大质量黑洞因“消化不良”而喷发物质
July 13, 2017, 02:45:46 AM
#3
可怕
Dean_Jue
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Re: 超大质量黑洞因“消化不良”而喷发物质
July 13, 2017, 02:47:26 AM
#4
消化不良就吃吗丁啉
tytytm
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Re: 超大质量黑洞因“消化不良”而喷发物质
July 13, 2017, 02:49:09 AM
#5
消化不良,是不是太人性化了?
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