The Hubble constant from eight time-delay galaxy lenses

  title={The Hubble constant from eight time-delay galaxy lenses},
  author={Philipp Denzel and Jonathan P. Coles and Prasenjit Saha and Liliya L. R. Williams},
  journal={Monthly Notices of the Royal Astronomical Society},
We present a determination of the Hubble constant from the joint, free-form analysis of 8 strongly, quadruply lensing systems. In the concordance cosmology, we find $H_0 = 71.8^{+3.9}_{-3.3}\,\mathrm{km}\,\mathrm{s}^{-1}\,\mathrm{Mpc}^{-1}$ with a precision of $4.97\%$. This is in agreement with the latest measurements from Supernovae Type Ia and Planck observations of the cosmic microwave background. Our precision is lower compared to these and other recent time-delay cosmography… 

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