An analysis of the LIGO discovery based on introductory physics

An analysis of the LIGO discovery based on introductory physics
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基于入门物理学对 LIGO 发现的分析

DOI:
10.1119/1.4985727
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发表时间:
2016
影响因子:
0.9
通讯作者:
Ashton Lowenstein
Ashton Lowenstein
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
H. Mathur;Katherine Jones;Ashton Lowenstein

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通过观测来自双黑洞合并的引力辐射,LIGO合作同时打开了一扇新的宇宙窗口,并首次实现了对引力波的直接探测。这里,我们使用物理学入门中的概念来分析这一发现。利用牛顿力学、维度考虑以及引力波和电磁波之间的类比,我们能够解释LIGO数据的主要特征,并通过检查数据对事件的关键参数做出数量级估计。我们对黑洞质量、到事件的距离、黑洞对的初始间隔和巨大的总辐射能量的估计都与LIGO-Virgo合作获得的这些参数的最佳拟合值很好地吻合。
By observing gravitational radiation from a binary black hole merger, the LIGO collaboration has simultaneously opened a new window on the universe and achieved the first direct detection of gravitational waves. Here this discovery is analyzed using concepts from introductory physics. Drawing upon Newtonian mechanics, dimensional considerations, and analogies between gravitational and electromagnetic waves, we are able to explain the principal features of LIGO's data and make order of magnitude estimates of key parameters of the event by inspection of the data. Our estimates of the black hole masses, the distance to the event, the initial separation of the pair, and the stupendous total amount of energy radiated are all in good agreement with the best fit values of these parameters obtained by the LIGO-VIRGO collaboration.
(5)“墨西哥绘画的魅力”,横滨市绿区市民文化中心,2009年7月21日。
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