Discrepancies between CFHTLenS cosmic shear and Planck: new physics or systematic effects?

@article{Kitching2016DiscrepanciesBC,
  title={Discrepancies between CFHTLenS cosmic shear and Planck: new physics or systematic effects?},
  author={Thomas D. Kitching and Licia Verde and Alan F. Heavens and Ra{\'u}l Jim{\'e}nez},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2016},
  volume={459},
  pages={971-981}
}
  • Thomas D. Kitching, Licia Verde, +1 author Raúl Jiménez
  • Published 2016
  • Physics
  • Monthly Notices of the Royal Astronomical Society
  • There is currently a discrepancy in the measured value of the amplitude of matter clustering, parameterised using $\sigma_8$, inferred from galaxy weak lensing, and cosmic microwave background data, which could be an indication of new physics, such as massive neutrinos or a modification to the gravity law, or baryon feedback. In this paper we make the assumption that the cosmological parameters are well determined by Planck, and use weak lensing data to investigate the implications for baryon… CONTINUE READING

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