Solidot: 天文学家首次直接测量黑洞转速

Solidot

奇客的资讯，重要的东西

天文学家首次直接测量黑洞转速
http://solidot.org.feedsportal.com/c/33236/f/556826/s/290c4498/l/0L0Ssolidot0Borg0Cstory0Dsid0F33637/story01.htm
Feb 28th 2013, 10:25

天文学家首次通过观测视界边缘的时空扭曲相对论效应去直接测量黑洞的旋转速度。论文发表在最新一期的《自然》情况上。测量铁离子在吸进黑洞吸积盘过程中发射出的X射线，可提供黑洞旋转有多快的直接信息。天文学家使用NASA的核区分光望远镜阵列（NuSTAR）和欧洲天文台的牛顿X射线望远镜(XMM-Newton)，去研究5600万光年外的星系NGC 1365中的超大质量黑洞。NGC 1365有一个活跃的星系核，发射出明亮的X射线。研究人员的计算显示，NGC 1365黑洞的转速非常快，达到了理论最大速率的84%。This entry passed through the Full-Text RSS service — if this is your content and you're reading it on someone else's site, please read the FAQ at fivefilters.org/content-only/faq.php#publishers. Five Filters recommends: Eyes Like Blank Discs - The Guardian's Steven Poole On George Orwell's Politics And The English Language.



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