Cosmology with 21cm intensity mapping

The nature of the most abundant components of the Universe, dark energy and dark matter, is still to be uncovered. I tackle this subject considering a novel cosmological probe: the neutral hydrogen emitted 21cm radiation, observed with the intensity mapping technique. I analyse competitive and reali...

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Bibliographic Details
Published in:arXiv.org 2017-12
Main Author: Carucci, Isabella P
Format: Article
Language:English
Subjects:
Cosmology
Dark energy
Dark matter
Mapping
Radio signals
Radio telescopes
Universe
Online Access:Get full text
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Summary:The nature of the most abundant components of the Universe, dark energy and dark matter, is still to be uncovered. I tackle this subject considering a novel cosmological probe: the neutral hydrogen emitted 21cm radiation, observed with the intensity mapping technique. I analyse competitive and realistic dark energy and dark matter models and show how they produce distinctive and detectable effects on the 21cm signal. Moreover, I provide radio telescope forecasts showing how these models will be distinguishable in an unprecedented way.
ISSN:2331-8422
DOI:10.48550/arxiv.1712.04022