Constraining Scale-Dependent Non-Gaussianity with Future Large-Scale Structure and the CMB
Cosmology and Nongalactic Astrophysics
2015-06-05 v2 High Energy Physics - Phenomenology
Abstract
We forecast combined future constraints from the cosmic microwave background and large-scale structure on the models of primordial non-Gaussianity. We study the generalized local model of non-Gaussianity, where the parameter f_NL is promoted to a function of scale, and present the principal component analysis applicable to an arbitrary form of f_NL(k). We emphasize the complementarity between the CMB and LSS by using Planck, DES and BigBOSS surveys as examples, forecast constraints on the power-law f_NL(k) model, and introduce the figure of merit for measurements of scale-dependent non-Gaussianity.
Cite
@article{arxiv.1206.6165,
title = {Constraining Scale-Dependent Non-Gaussianity with Future Large-Scale Structure and the CMB},
author = {Adam Becker and Dragan Huterer and Kenji Kadota},
journal= {arXiv preprint arXiv:1206.6165},
year = {2015}
}
Comments
28 pages, 8 figures, 2 tables; v2: references updated