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On the Constraints on Superconducting Cosmic Strings from 21-cm Cosmology
T. Gessey-Jones, S. Pochinda, H. T. J. Bevins +5
Constraints on the potential properties of superconducting cosmic strings provide an indirect probe of physics beyond the standard model at energies inaccessible to terrestrial par…
Constraining the properties of Population III galaxies with multi-wavelength observations
S. Pochinda, T. Gessey-Jones, H. T. J. Bevins +7
The early Universe, spanning 400,000 to 400 million years after the Big Bang (), has been left largely unexplored as the light from luminous objects is too faint t…
FlexKnot as a Generalised Model of the Sky-averaged 21-cm Signal at z ~ 6-30 in the Presence of Systematics
Emma Shen, Dominic Anstey, Eloy de Lera Acedo +1
Global 21-cm experiments are built to study the evolution of the Universe between the cosmic dawn and the epoch of reionisation. FlexKnot is a function parameterised by freely movi…
The effects of the antenna power pattern uncertainty within a global 21 cm experiment
John Cumner, Carla Pieterse, Dirk De Villiers +1
Experimental 21 cm cosmology aims to detect the formation of the first stars during the cosmic dawn and the subsequent epoch of reionization by utilizing the 21 cm hydrogen line tr…
A Bayesian Method to Mitigate the Effects of Unmodelled Time-Varying Systematics for 21-cm Cosmology Experiments
Christian J. Kirkham, Dominic J. Anstey, Eloy de Lera Acedo
Radio observations of the neutral hydrogen signal from the Cosmic Dawn and Epoch of Reionisation have helped to provide constraints on the properties of the first stars and galaxie…
The Impact of Beam Variations on Power Spectrum Estimation for 21 cm Cosmology II: Mitigation of Foreground Systematics for HERA
Honggeun Kim, Nicholas S. Kern, Jacqueline N. Hewitt +7
One key challenge in detecting 21 cm cosmological signal at z > 6 is to separate the cosmological signal from foreground emission. This can be studied in a power spectrum space whe…