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Constraining reionization using 21 cm observations in combination with CMB and Lyman-alpha forest data
Jonathan R. Pritchard, Abraham Loeb, J. Stuart B. Wyithe
In this paper, we explore the constraints on the reionization history that are provided by current observations of the Lyman-alpha forest and the CMB. Rather than using a particula…
Forecasted 21 cm constraints on compensated isocurvature perturbations
Christopher Gordon, Jonathan R. Pritchard
A "compensated" isocurvature perturbation consists of an overdensity (or underdensity) in the cold dark matter which is completely cancelled out by a corresponding underdensity (or…
Cosmology from the Highly-Redshifted 21 cm Line
Steven Furlanetto, Adam Lidz, Abraham Loeb +26
One of the next decade's most exciting prospects is to explore the cosmic "dark ages," during which the first stars in the Universe formed, with the 21 cm line of neutral hydrogen.…
Astrophysics from the Highly-Redshifted 21 cm Line
Steven Furlanetto, Adam Lidz, Abraham Loeb +26
The cosmic dark ages and the epoch of reionization, during which the first generations of stars and galaxies formed, are among the most compelling frontiers of extragalactic astrop…
Observing Neutral Hydrogen Above Redshift 6: The "Global" Perspective
Judd D. Bowman, Alan E. E. Rogers, Jacqueline N. Hewitt
Above redshift 6, the dominant source of neutral hydrogen in the Universe shifts from localized clumps in and around galaxies and filaments to a pervasive, diffuse component of the…