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碰撞双黑洞探测到新引力波
文章来源：未知 文章作者：enread 发布时间：2016-06-16 08:00 字体： [大 中 小]　 进入论坛
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Gravitational waves from a second pair of colliding black holes has validated2 the landmark3 discovery from earlier this year that confirmed Einstein's general theory of relativity. Rochester Institute of Technology scientists contributed to the initial breakthrough and to the second discovery announced today by the Laser Interferometer Gravitational-wave Observatory4. The second gravitational wave was observed by the LIGO Scientific Collaboration5 and the Virgo Collaboration on Dec. 26, 2015, toward the end of the first science run of the Advanced LIGO detectors6. The findings, which will appear in the journal Physical Review Letters, validate1 the new field of gravitational wave astronomy and reveal diversity of size and spin among black holes in the universe.
 
"This detection corroborates7 our previous one," said Richard O'Shaughnessy, assistant professor in RIT's School of Mathematical Sciences and a member of RIT's LIGO group. "We can now demonstrate with complete confidence that it wasn't a fluke because we saw something again. And, critically, we're going to see sources that are not just like the first sources but include a wide range."
 
O'Shaughnessy and several of his colleagues in RIT's Center for Computational Relativity and Gravitation are members of the LIGO Scientific Collaboration. Scientists at RIT's center simulate extreme astrophysical scenarios8 on supercomputers to predict and validate gravitational wave signals, analyze9 gravitational wave data and estimate astrophysical implications.
 
The landmark discovery occurred on Sept. 14, 2015, and was publicly announced on Feb. 11. The scientific breakthrough confirmed predictions in Albert Einstein's general theory of relativity and involved the merger10 of black holes that weighed 29 and 36 solar masses.
 
The binary11 black holes in this event weighed 14 and 8 times the mass of the sun and were one-third the size of the first pair of black holes LIGO observed. The orbiting black holes merged12 to form gravitational waves 1.4 billion years ago. The merger produced a single, more massive spinning black hole, weighing 21 times the mass of the sun. The impact converted the energy equivalent of the sun's mass into gravitational waves, or ripples13 in the fabric14 of space-time.


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1 validate Jiewm     
vt.（法律）使有效，使生效
参考例句：
  • You need an official signature to validate the order.你要有正式的签字，这张汇票才能生效。
  • In order to validate the agreement,both parties sign it.为使协议有效，双方在上面签了字。
2 validated c9e825f4641cd3bec0ba01a0c2d67755     
v.证实( validate的过去式和过去分词 )；确证；使生效；使有法律效力
参考例句：
  • Time validated our suspicion. 时间证实了我们的怀疑。 来自《现代英汉综合大词典》
  • The decade of history since 1927 had richly validated their thesis. 1927年以来的十年的历史，充分证明了他们的论点。 来自辞典例句
3 landmark j2DxG     
n.陆标，划时代的事，地界标
参考例句：
  • The Russian Revolution represents a landmark in world history.俄国革命是世界历史上的一个里程碑。
  • The tower was once a landmark for ships.这座塔曾是船只的陆标。
4 observatory hRgzP     
n.天文台，气象台，瞭望台，观测台
参考例句：
  • Guy's house was close to the observatory.盖伊的房子离天文台很近。
  • Officials from Greenwich Observatory have the clock checked twice a day.格林威治天文台的职员们每天对大钟检查两次。
5 collaboration bW7yD     
n.合作，协作；勾结
参考例句：
  • The two companies are working in close collaboration each other.这两家公司密切合作。
  • He was shot for collaboration with the enemy.他因通敌而被枪毙了。
6 detectors bff80b364ed19e1821aa038fae38df83     
探测器( detector的名词复数 )
参考例句：
  • The report advocated that all buildings be fitted with smoke detectors. 报告主张所有的建筑物都应安装烟火探测器。
  • This is heady wine for experimenters using these neutrino detectors. 对于使用中微子探测器的实验工作者，这是令人兴奋的美酒。 来自英汉非文学 - 科技
7 corroborates 1b47fdad225ce6bcbcec108c601b905f     
v.证实，支持（某种说法、信仰、理论等）( corroborate的第三人称单数 )
参考例句：
  • This article narrates a innovated dynamic penetration test method that mainly corroborates soil bearing capacity. 探讨了一种改进的动力触探方法，主要用于确定土的承载力。 来自互联网
  • David, soon to be king of Israel, had an experience that corroborates this idea. 大卫即将成为以色列的国王之际，曾有过一次这样的经历。 来自互联网
8 scenarios f7c7eeee199dc0ef47fe322cc223be88     
n.[意]情节；剧本；事态；脚本
参考例句：
  • Further, graphite cores may be safer than non-graphite cores under some accident scenarios. 再者，根据一些事故解说，石墨堆芯可比非石墨堆芯更安全一些。 来自英汉非文学 - 环境法 - 环境法
  • Again, scenarios should make it clear which modes are acceptable to users in various contexts. 同样，我们可以运用场景剧本来搞清楚在不同情境下哪些模式可被用户接受。 来自About Face 3交互设计精髓
9 analyze RwUzm     
vt.分析，解析 (=analyse)
参考例句：
  • We should analyze the cause and effect of this event.我们应该分析这场事变的因果。
  • The teacher tried to analyze the cause of our failure.老师设法分析我们失败的原因。
10 merger vCJxG     
n.企业合并，并吞
参考例句：
  • Acceptance of the offer is the first step to a merger.对这项提议的赞同是合并的第一步。
  • Shareholders will be voting on the merger of the companies.股东们将投票表决公司合并问题。
11 binary jybzWZ     
adj.二，双；二进制的；n.双(体)；联星
参考例句：
  • Computers operate using binary numbers.计算机运行运用二进位制。
  • Let us try converting the number itself to binary.我们试一试，把这个数本身变成二进制数。
12 merged d33b2d33223e1272c8bbe02180876e6f     
（使）混合( merge的过去式和过去分词 )； 相融； 融入； 渐渐消失在某物中
参考例句：
  • Turf wars are inevitable when two departments are merged. 两个部门合并时总免不了争争权限。
  • The small shops were merged into a large market. 那些小商店合并成为一个大商场。
13 ripples 10e54c54305aebf3deca20a1472f4b96     
逐渐扩散的感觉( ripple的名词复数 )
参考例句：
  • The moon danced on the ripples. 月亮在涟漪上舞动。
  • The sea leaves ripples on the sand. 海水在沙滩上留下了波痕。
14 fabric 3hezG     
n.织物，织品，布；构造，结构，组织
参考例句：
  • The fabric will spot easily.这种织品很容易玷污。
  • I don't like the pattern on the fabric.我不喜欢那块布料上的图案。
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