Superluminal recession velocities

  title={Superluminal recession velocities},
  author={Tamara M. Davis and C. Lineweaver},
  journal={arXiv: Astrophysics},
Hubble’s Law, v=HD (recession velocity is proportional to distance), is a theoretical result derived from the Friedmann-Robertson-Walker metric. v=HD applies at least as far as the particle horizon and in principle for all distances. Thus galaxies with distances greater than D=c/H are receding from us with velocities greater than the speed of light and superluminal recession is a fundamental part of the general relativistic description of the expanding universe. This apparent contradiction of… 

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