Two-dimensional Modeling of the Solar Oscillation l-ν Power Spectrum

Abstract

We describe an algorithm which can accurately model the spatial-temporal l-ν solar oscillation power spectrum over large ranges in frequency (ν) and degree (l). We show how modeling in two dimensions provides a better representation of the observed spectrum than can be obtained with traditional one-dimensional approaches. The gain comes from using more of the observed signal to constrain the model and improved descriptions of the solar background spectrum and the signal leakage between different spatial scales. We discuss the level of systematic error that can be expected in the solar oscillation mode frequency data published to date.