Fitting methods for baryon acoustic oscillations in the Lyman-

Abstract

We describe tting methods developed to analyze uctuations in the Lyman- forest and measure the parameters of baryon acoustic oscillations (BAO). We apply our methods to BOSS Data Release 9. Our method is based on models of the three-dimensional correlation function in physical coordinate space, and includes the e ects of redshift-space distortions, anisotropic non-linear broadening, and broadband distortions. We allow for independent scale factors along and perpendicular to the line of sight to minimize the dependence on our assumed ducial cosmology and to obtain separate measurements of the BAO angular and relative velocity scales. Our tting software and the input les needed to reproduce our main BOSS Data Release 9 results are publicly available.