Measurement of the 1D Lyman-alpha Power Spectrum with the DR9 BOSS Quasar Data
Abstract
We present two independent and complementary methods for the reconstruction of the line-of-sight power spectrum of the transmitted flux in the Lyman-alpha forest, for redshifts between 2.2 and 4.2. The study is using data from the DR9 release of the Baryon Oscillation Spectroscopic Survey (BOSS) of the third generation of the Sloan Digital Sky Survey (SDSS-III). We selected a sample of ~15k high-quality quasar spectra, almost an order of magnitude larger than for previously published studies. Thanks to this abundant data and to a careful examination of sources of potential biases, this measurement of the 1D power spectrum will be used to derive constraints on cosmological parameters.
- Publication:
-
American Astronomical Society Meeting Abstracts #221
- Pub Date:
- January 2013
- Bibcode:
- 2013AAS...22140202B