Forecasting Cosmic Parameter Errors from Microwave Background Anisotropy Experiments

Details Forecasting Cosmic Parameter Errors from Microwave Background Anisotropy Experiments Forecasting Cosmic Parameter Errors from Microwave Background Anisotropy Experiments

1997-02-12

arxiv.org/abs/astro-ph/9702100v2

Mon.Not.Roy.Astron.Soc.291:L33-L41,1997

Astronomy and Astrophysics

Astrophysics

10 pages, LaTeX, with 1 figure included. Revised version to appear in MNRAS with updated text, tables and figure. Text and col

Scientific paper

Accurate measurements of the cosmic microwave background (CMB) anisotropies with an angular resolution of a few arcminutes can be used to determine fundamental cosmological parameters such as the densities of baryons, cold and hot dark matter, and certain combinations of the cosmological constant and the curvature of the Universe to percent-level precision. Assuming the true theory is a variant of inflationary cold dark matter cosmologies, we calculate the accuracy with which cosmological parameters can be determined by the next generation of CMB satellites, MAP and Planck. We pay special attention to: (a) the accuracy of the computed derivatives of the CMB power spectrum C_L; (b) the number and choices of parameters; (c) the inclusion of prior knowledge of the values of various parameters.

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