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Tomography of the Cosmic Dawn and Reionization Eras with Multiple Tracers
, 2019 Astro2020 Science White Paper; 5 pages, 1 figureThe Cosmic Dawn and Reionization epochs remain a fundamental but challenging frontier of astrophysics and cosmology. We advocate a large-scale, multi-tracer approach to develop a comprehensive understanding
Breysse, Patrick C. +43 more
core +3 more sources
The infancy of cosmic reionization [PDF]
Monthly Notices of the Royal Astronomical Society, 2008 We consider the early stages of cosmic hydrogen or helium reionization, when ionizing sources were still rare. We show that Poisson fluctuations in the galaxy distribution substantially affected the early bubble size distribution, although galaxy clustering was also an essential factor even at the earliest times.
openaire +3 more sources
CMB neutrino mass bounds and reionization [PDF]
, 2010 Current cosmic microwave background bounds on the sum of the neutrino masses assume a sudden reionization scenario described by a single parameter that determines the onset of reionization. We investigate the bounds on the neutrino mass in a more general
Melchiorri A +7 more
core +1 more source
The physics of Reionization: processes relevant for SKA observations
, 2015 International audienceThe local intensity of the 21 cm signal emitted during the Epoch of Reionization that will be mapped by the SKA is modulated by the amount of neutral hydrogen.
Iliev, I., Semelin, B.
core +6 more sources
Dust distribution during reionization [PDF]
Astronomy & Astrophysics, 2007 The dust produced by the first generation of stars will be a foreground to cosmic microwave background. In order to evaluate the effect of this early dust, we calculate the power spectrum of the dust emission anisotropies and compare it with the sensitivity limit of the Planck satellite.
Elfgren, E. +2 more
openaire +4 more sources
Understanding the epoch of cosmic reionization: challenges and progress
, 2016 The aim of this volume is to summarize the current status and future outlook of the reionization field on both the theoretical and observational fronts.
Mesinger, Andrei, Mesinger A
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A very extended reionization epoch? [PDF]
Monthly Notices of the Royal Astronomical Society, 2005 The recent observations of cross temperature-polarization power spectra of the Cosmic Microwave Background (CMB) made by the WMAP satellite are in better agreement with a high value of the Thomson scattering optical depth τ\approx 0.17. This value is close to τ= 0.3, which is taken as the upper limit in the parameter extraction analysis made by the ...
Melchiorri, A. +3 more
openaire +2 more sources
Dark-ages reionization and galaxy formation simulation – XVI. The thermal memory of reionization
, 2019 Intergalactic medium temperature is a powerful probe of the epoch of reionization, as information is retained long after reionization itself. However, mean temperatures are highly degenerate with the timing of reionization, with the amount heat injected ...
Davies, James E +5 more
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Crossing the Rubicon of Reionization with z ∼ 5 QSOs
The Astrophysical Journal, 2023 One of the key open questions in cosmology is the nature of sources that completed cosmological hydrogen reionization at z ∼ 5.2. High- z primeval galaxies have been long considered the main drivers of reionization, with a minor role played by high- z ...
Andrea Grazian +14 more
doaj +1 more source
An Estimate of the Impact of Reionization on Supermassive Black Hole Growth
The Astrophysical JournalThe supermassive black holes (SMBHs) that power active galactic nuclei found at z ≥ 6 were formed during the Epoch of Reionization. Because reionization is an inhomogeneous process, the physical properties of SMBH host-galaxy environments will vary ...
Phoebe R. Upton Sanderbeck +2 more
doaj +1 more source