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OATS-DAUT SEMINAR
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Speaker: Simeon Bird (IoA Cambridge, UK)
Title: The clustering of matter at redshift 3
Date: Wednesday, December 1st, 2010
Time: 15:00
Venue: Villa Bazzoni
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Abstract:
Current analyses of the Lyman-alpha forest assume the primordial
power spectrum of density perturbations follows a simple power law
form. We have used a large suite of numerical simulations to
calibrate a minimally parametric framework for the power spectrum,
dropping this assumption. I shall discuss our methods, including our
use of the statistical technique of cross-validation to avoid
over-fitting the data. Finally, I shall present our results, using
current Lyman-alpha data from SDSS, and our forecasts for BOSS
data.
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contact: Matteo Viel (OATS)