The Influence of the Peculiar Velocities of SNe Ia in Clusters of
  Galaxies on the Redshift Measurements
  The most intriguing question of modern astronomy is the question of our
Universe formation. The Hubble diagram analysis with Type Ia Supernovae (SNe
Ia) is widely used to estimate the cosmological parameters with high accuracy.
The cosmological measurements allow us to better understand the early stages of
the Universe evolution. Nevertheless, the redshift on the SN Ia Hubble diagram
includes the contribution from the unknown peculiar velocities that decreases
the accuracy of such measurements. We consider the contamination of peculiar
velocities of the host galaxies for those SNe that exploded in galaxy clusters.
For this purpose, we use the Pantheon cosmological sample and offer the
procedure to minimise the influence of such uncertainties.
