Cosmological Constraints from Type Ia Supernovae Peculiar Velocity Measurements

Preprint

16 May 2007

preprint
Published by arXiv in arXiv

Abstract

We detect the correlated peculiar velocities of nearby type Ia supernovae (SNe), while highlighting an error in some of the literature. We find sigma_8=0.79 +/- 0.22 from SNe alone, 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 about 35% if the coherent peculiar velocities are not included.

Keywords

COSMOLOGICAL CONSTRAINTS
SUPERNOVAE PECULIAR
PECULIAR VELOCITIES
TYPE IA SUPERNOVAE
SURVEY

All Related Versions

Version 1, 2007-05-11, ArXiv
Version 2, 2007-05-16, ArXiv
Version 3, 2007-07-13, ArXiv
Version 4, 2007-07-16, ArXiv
Version 5, 2007-09-07, ArXiv
Published version: Physical Review Letters, 99 (8), 081301.

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