First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Determination of Cosmological Parameters
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Implication
Randomized trial assesses cosmological parameters in a flat Lambda-dominated universe, indicating new astrophysical insights.
Key Points
- This research aims to derive precise cosmological parameters using data from the WMAP.
- Analyzed WMAP data alongside other astronomical measurements like ACBAR, CBI, 2dFGRS, and Lyman alpha forest data.
- Fitted parameters to cosmological models, focusing on a flat Lambda-dominated universe and scaling features.
- Determined various parameters such as age of the universe and dark energy characteristics.
- Achieved key cosmological parameters: h=0.71 (+0.04, -0.03), Omega_b h²=0.0224 (+-0.0009).
- Constrained the dark energy equation of state w to less than -0.78 with 95% confidence.
- Confirmed the universe's age as 13.7 (+-0.2) Gyr based on the fitted parameters.
Cite This Study
Spergel et al. (2003) studied this question.