GW170814

GW170814
其它名稱GW170814
事件類型gravitational wave event 编辑维基数据
日期2017年8月14日 编辑维基数据
儀器室女座干涉儀激光干涉引力波天文台 编辑维基数据
赤经3h 11m
赤纬-44° 57′
紅移0.11 ±0.04 编辑维基数据
Total energy outputM × c2
先前GW170608 编辑维基数据
其後GW170817 编辑维基数据
共享资源页面 维基共享资源中相关的多媒体资源

GW170814激光干涉引力波天文台(LIGO)和室女座干涉仪(VIRGO)于2017年8月14日联合探测到的一次双黑洞并合引力波事件。[1] 2017年9月27日,LIGO和VIRGO公布了观察信号,GW170814成为继GW150914, GW151226GW170104之后第四起认证的引力波事件。 它也是第一起LIGO和VIRGO联合探测到的双黑洞并合事件。[2]

事件探测

GW170814的估计位置。

该信号于2017年8月14日10:30:43UTC被探测到。利文斯顿的探测器最先接收到信号,汉福德探测器和室女座干涉仪分别于8毫秒和14毫秒后接收到信号。三个探测器给出了对源的位置的非常精确的估计,90%置信区域的大小仅为60 °2,比之前的探测精确20倍。[3]

天体物理学起源

分析表明,引力波信号来源于双黑洞(BBH)的绕转与并合,两个黑洞的质量分别为和< ,与地球的距离约为Mpc(百万光年)。[4] 并合形成的黑洞约为个太阳质量,约个太阳质量以引力波辐射的形式传播出去。GW170814的峰值光度W。

对广义相对论的影响

广义相对论预测引力波具有类量(spin-2)的偏振。 三个探测器的探测给出了张量偏振的有力的实验证据。[5]

参见

参考文献

  1. ^ Overbye, Dennis. New Gravitational Wave Detection From Colliding Black Holes. The New York Times. 27 September 2017 [28 September 2017]. (原始内容存档于2021-01-14). 
  2. ^ Abbott, Benjamin P. GW170814: A three-detector observation of gravitational waves from a binary black hole coalescence. Phys. Rev. Lett. 2017, 119 (14): 141101 [2018-01-02]. arXiv:1709.09660可免费查阅. doi:10.1103/PhysRevLett.119.141101. (原始内容存档于2020-07-30). 简明摘要 (PDF).  已忽略未知参数|collaboration= (帮助)
  3. ^ Update on Gravitational Wave Science from the LIGO-Virgo Scientific Collaborations页面存档备份,存于互联网档案馆) (Video of the press conference), retrieved 27 September 2017
  4. ^ New detectors reveal a cosmic ()calamity页面存档备份,存于互联网档案馆). Don Lincoln, CNN News, 1 October 2017
  5. ^ European detector spots its first gravitational wave. Elizabeth Gibney & Davide Castelvecchi (Nature). 27 September 2017 [27 September 2017]. (原始内容存档于2020-07-12). 

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