Precise Measurement of the Matter Power Spectrum Amplitude and the Background Radiation Amplitude

Details Precise Measurement of the Matter Power Spectrum Amplitude and the Background Radiation Amplitude Precise Measurement of the Matter Power Spectrum Amplitude and the Background Radiation Amplitude

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...20512306j&link_type=abstract

American Astronomical Society Meeting 205, #123.06; Bulletin of the American Astronomical Society, Vol. 36, p.1552

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We use state of the art Lyman-α forest simulations to investigate how properties of the forest, such as the mean flux, the b-parameter distribution and the flux power depend on cosmological and astrophysical parameters, specifically the matter power amplitude σ 8, the background UV radiation amplitude and the helium reheating rate. We present our results of scaling relationships between these parameters and use them to determine the best fit values of the cosmological parameters.

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