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Showing 1 to 4 of 4 for “"21cm Cosmology"”.
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Characterization and Mitigation of Terrestrial and Astrophysical Foreground Effects in 21cm Cosmology
… contributions relevant to the commissioning of 21cm cosmology experiments, the first two being devoted to the characterization and mitigation of VHF-band radio frequency interference (RFI), and the last two being devoted to the characterization and mitigation of astrophysical foregrounds in …
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Data Analysis in Global 21cm Experiments: Physically Motivated Bayesian Modelling Techniques
21cm cosmology is a field in which the absorption and emission from the cosmic radio background by neutral hydrogen gas is used to probe cosmology and astrophysics of early epochs of the universe. In particular, this process is one of the most promising methods of measuring the Cosmic Dawn, when …
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Illuminating the Cosmos: dark matter, primordial black holes, and cosmic dawn
The Λ-CDM model of cosmology has done much to clarify our picture of the early universe. However, there are still some questions that Λ-CDM does not necessarily answer; questions such as what is the fundamental nature of dark matter? What is its origin? And what causes the intriguing measurements …
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The Bayesian Global Sky Model (B-GSM)
… [3, 5]. It is therefore essential, for 21-cm cosmology studies, that an accurate foreground model be available for the low frequency sky. In this thesis, we present a new low frequency global model of the diffuse radio sky, the Bayesian Global Sky Model (B-GSM). The novel Bayesian framework of …