The $m–z$ relation for Type Ia supernovae, locally inhomogeneous cosmological models, and the nature of dark matter

  title={The \$m–z\$ relation for Type Ia supernovae, locally inhomogeneous cosmological models, and the nature of dark matter},
  author={Phillip Helbig},
  journal={Monthly Notices of the Royal Astronomical Society},
  • P. Helbig
  • Published 12 May 2015
  • Physics
  • Monthly Notices of the Royal Astronomical Society
The $m$-$z$ relation for type Ia supernovae is one of the key pieces of evidence supporting the cosmological `concordance model' with $\lambda_0 \approx 0.7$ and $\Omega_0 \approx 0.3$. However, it is well known that the $m$-$z$ relation depends not only on $\lambda_0$ and $\Omega_0$ (with $H_0$ as a scale factor) but also on the density of matter along the line of sight, which is not necessarily the same as the large-scale density. I investigate to what extent the measurement of $\lambda_0… 

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