• "American Journal of Physics 论文选载" •

### 基于普通物理分析LIGO 引力波数据

Harsh Mathur，Katherine Brown，Ashton Lowenstein 注1: 本文选自: American Journal of Physics. http: / /dx.doi.org /10.1119 /1.4985727 注2: 本文译者: 苏俊，江苏海安高级中学教师.

1. 1. 凯斯西储大学物理系，克利夫兰，俄亥俄州，美国，44106-7079; 2．汉密尔顿学院物理系，克林顿，纽约州，美国，13323)
• 出版日期:2018-06-20 发布日期:2018-06-20

### An analysis of the LIGO discovery based on introductory physics

Harsh Mathur，Katherine Brown，Ashton Lowenstein

1. Department of Physics，Case Western Reserve University，Cleveland，Ohio 44106-7079;Department of Physics，Hamilton College，Clinton，New York 13323
• Online:2018-06-20 Published:2018-06-20

Abstract: 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