Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published August 2015 | Submitted
Journal Article Open

Optimization of spectroscopic surveys for testing non-Gaussianity

Abstract

We investigate optimization strategies to measure primordial non-Gaussianity with future spectroscopic surveys. We forecast measurements coming from the 3D galaxy power spectrum and compute constraints on primordial non-Gaussianity parameters f_(NL) and n_(NG). After studying the dependence on those parameters upon survey specifications such as redshift range, area, number density, we assume a reference mock survey and investigate the trade-off between number density and area surveyed. We then define the observational requirements to reach the detection of f_(NL) of order 1. Our results show that while power spectrum constraints on non-Gaussianity from future spectroscopic surveys can be competitive with current CMB limits, measurements from higher-order statistics will be needed to reach a sub unity precision in the measurements of the non-Gaussianity parameter f_(NL).

Additional Information

© 2015 IOP Publishing. Received 24 October 2014; Accepted 13 July 2015; Published 17 August 2015. Part of the research described in this paper was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. We would like to thank Dragan Huterer and Vincent Desjacques for useful suggestions, and David Bacon, Nicola Bartolo, Sabino Matarrese and Will Percival for useful discussions.

Attached Files

Submitted - 1409.1927v1.pdf

Files

1409.1927v1.pdf
Files (610.7 kB)
Name Size Download all
md5:6f6fec3a8271901b6ccc16f71885c6cc
610.7 kB Preview Download

Additional details

Created:
August 20, 2023
Modified:
October 18, 2023