Work

Cosmic Complementarity: [ITAL]H[/ITAL][TINF]0[/TINF] and Ω[TINF][CLC][ITAL]m[/ITAL][/CLC][/TINF] from Combining Cosmic Microwave Background Experiments and Redshift Surveys

Year: 1998

Type: article

Abstract: We show that the detection of acoustic oscillations in both upcoming cosmic microwave background (CMB) satellite experiments and large-redshift surveys can yield 5% determinations of H 0 and Ω m , an order-of-magnitude improvement over CMB data alone. CMB anisotropies provide the sound horizon at recombination as a standard ruler. For reasonable baryon fractions, this scale is imprinted on the galaxy power spectrum as a series of spectral features. Measuring these features in redshift space determines the Hubble constant, which in turn yields Ω m once combined with CMB data. Since the oscillations in both power spectra are frozen-in at recombination, this test is insensitive to low-redshift cosmology.

Source: The Astrophysical Journal

DOI: 10.1086/311582

Authors: Daniel J. Eisenstein, Wayne Hu, Max Tegmark

Institution: Institute for Advanced Study

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: National Science Foundation, National Aeronautics and Space Administration, W. M. Keck Foundation, Space Telescope Science Institute

Awards: Theoretical Physics, G6273510985