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Extrapolating the Evolution of Galaxy Sizes to the Epoch of Reionization
Stuart Wyithe, Abraham Loeb
We use data on the high-redshift evolution of the size distribution and luminosity function of galaxies to constrain the relationship between their star formation efficiency and st…
Polarised foreground removal at low radio frequencies using rotation measure synthesis: uncovering the signature of hydrogen reionisation
Paul M. Geil, B. M. Gaensler, J. Stuart B. Wyithe
Measurement of redshifted 21-cm emission from neutral hydrogen promises to be the most effective method for studying the reionisation history of hydrogen and, indirectly, the first…
Subtraction of Bright Point Sources from Synthesis Images of the Epoch of Reionization
B. Pindor, J. S. B. Wyithe, D. A. Mitchell +3
Bright point sources associated with extragalactic AGN and radio galaxies are an important foreground for low frequency radio experiments aimed at detecting the redshifted 21cm emi…
A gravitational lensing explanation for the excess of strong Mg-II absorbers in GRB afterglow spectra
Stuart Wyithe, S. Peng Oh, Bartosz Pindor
GRB afterglows offer a probe of the intergalactic medium out to high redshift which complements observations along more abundant quasar lines-of-sight. Although both quasars and GR…
A first direct measurement of the intergalactic medium temperature around a quasar at z=6
James S. Bolton, George D. Becker, J. Stuart B. Wyithe +2
The thermal state of the intergalactic medium (IGM) provides an indirect probe of both the HI and HeII reionisation epochs. Current constraints on the IGM temperature from the Lya…