Extracting the global signal from 21-cm fluctuations: the multitracer approach
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Date
2019
Journal Title
Journal ISSN
Volume Title
Publisher
Oxford University Press
Abstract
The multitracer technique employs a ratio of densities of two differently biased galaxy samples that trace the same underlying matter density field, and was proposed to alleviate the cosmic variance problem. Here, we propose a novel application of this approach, applying it to two different tracers one of which is the 21-cm signal of neutral hydrogen from the epochs of reionization and comic dawn.
Description
Keywords
Galaxies: high redshift, Cosmology: theory, Dark ages, Reionization, First stars
Citation
Jarvis, M. et al. (2019). Extracting the global signal from 21-cm fluctuations: the multitracer approach. Monthly Notices of the Royal Astronomical Society, 491(3), 3108–3119