Is GW151226 a really signal of gravitational wave

@article{Chang2016IsGA,
  title={Is GW151226 a really signal of gravitational wave},
  author={Zhe Chang and Chao-guang Huang and Zhi-Chao Zhao},
  journal={arXiv: General Relativity and Quantum Cosmology},
  year={2016}
}
Recently, the LIGO Scientific Collaboration and Virgo Collaboration published the second observation on gravitational wave GW151226 [Phys. Rev. Lett. 116, 241103 (2016)] from the binary black hole coalescence with initial masses about 14 M$_\odot$ and 8 M$_\odot$. They claimed that the peak gravitational strain was reached at about 450 Hz, the inverse of which has been longer than the average time a photon staying in the Fabry-Perot cavities in two arms. In this case, the phase-difference of a… 
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