skip to main content

SciTech ConnectSciTech Connect

Title: The Lyman α forest as a tool for disentangling non-Gaussianities

Detection of primordial non-Gaussianity will give us an unprecedented detail of the physics of inflation. As observational probes are now exploring new expanses of the inflationary landscape, it is crucial to distinguish and disentangle effects of various non-Gaussianities beyond f{sub NL}. In this work, we calculate the effects of non-Gaussianities parametrized by f{sub NL} and the cubic-order g{sub NL}, on the Lyman α-forest flux measurements. We give the expressions of the bias due to f{sub NL} and g{sub NL}, which can be deduced from accurate measurements of the transmitted flux. We show how these two effects can be cleanly disentangled via a flux transformation, which also keeps the error in check.
Authors:
 [1]
  1. Department of Physics and Mathematics, University of Hull, Cottingham Rd., Hull, HU6 7RX (United Kingdom)
Publication Date:
OSTI Identifier:
22375819
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2014; Journal Issue: 10; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COSMOLOGICAL INFLATION; DETECTION; ERRORS; TRANSFORMATIONS