Cosmological constraints from current CMB and SN 1a data: a brute force 9 parameter analysis

Preprint

17 September 1998

preprint
Published by arXiv in arXiv

Abstract

We describe constraints on the ``standard'' 9 parameter open cold dark matter (CDM) model from the most recent CMB and SN1a data. Our parameters are the densities of CDM, baryons, vacuum energy and curvature, the reionization optical depth, and the normalization and tilt for both scalar and tensor fluctuations. We find that although the possibility of reionization and gravity waves substantially weakens the constraints on CDM and baryon density, tilt, curvature and Hubble constant, models with vanishing cosmological constant are still strongly disfavored.

Keywords

COSMOLOGICAL CONSTRAINTS
REIONIZATION
DARK MATTER
BRUTE FORCE
CURRENT CMB
1A DATA
GRAVITY
SN 1A
CDM

All Related Versions

Version 1, 1998-09-17, ArXiv
Version 2, 1999-02-02, ArXiv
Published version: The Astrophysical Journal, 514 (2), L69.

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