Cosmological constraints from type ia supernovae peculiar velocity measurements.
We detect the correlated peculiar velocities of nearby type Ia supernovae (SNe), while highlighting an error in some of the literature. We find sigma8 = 0.79 +/- 0.22 from SNe, and examine the potential of this method to constrain cosmological parameters in the future. We demonstrate that a survey of 300 low-z SNe (such as the nearby SNfactory) will underestimate the errors on w by approximately 35% if the coherent peculiar velocities are not included.
Gordon
C
C
Oxford Astrophysics, Physics, DWB, Keble Road, Oxford, UK.
Land
K
K
Slosar
A
A
D001256:Astronomy; D006801:Humans; D008027:Light