Specific Effect of Peculiar Velocities on Dark-Energy Constraints from
  Type Ia Supernovae
  Peculiar velocities of type Ia supernova (SNIa) host galaxies affect the
dark-energy parameter constraints in a small but very specific way: the
parameters are biased in a single direction in parameter space that is a-priori
knowable for a given SNIa dataset. We demonstrate the latter fact with a
combination of inference from a cosmological N-body simulation with
overwhelming statistics applied to the Pantheon SNIa data set, then confirm it
by simple quantitative arguments. We quantify small modifications to the
current analyses that would ensure that the effect of cosmological parameters
is essentially guaranteed to be negligible.
