The Hubble diagram for a system within dark energy: the location of the zero-gravity radius and the global Hubble rate

  title={The Hubble diagram for a system within dark energy: the location of the zero-gravity radius and the global Hubble rate},
  author={Pekka Teerikorpi and Arthur D. Chernin},
  journal={Astronomy and Astrophysics},
Here we continue to discuss the principle of the local measurement of dark energy using the normalized Hubble diagram describing the environment of a system of galaxies. We calculate the present locus of test particles injected a fixed time ago (\sim the age of the universe), in the standard \Lambda -cosmology and for different values of the system parameters (the model includes a central point mass M and a local dark energy density \rho_{loc}) and discuss the position of the zero-gravity… Expand

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