Results 81 to 90 of about 727 (169)

Simulating Cosmic Reionization

open access: yes, 2008
Accepted refereed contribution to the TeraGrid08 ...
Iliev, Ilian T.   +4 more
openaire   +2 more sources

Primordial non-Gaussianity and reionization

open access: yesPhysical Review D, 2013
18 pages, 11 ...
Lidz, Adam   +3 more
openaire   +3 more sources

Cosmic Reionization on Computers: The Evolution of the Ionizing Background and Mean Free Path

open access: yesThe Astrophysical Journal
Observations of the end stages of reionization indicate that at z  ≈ 5–6, the ionizing background is not uniform and the mean free path (MFP) changes drastically.
Jiawen Fan   +3 more
doaj   +1 more source

LIMFAST. III. Timing Cosmic Reionization with the 21 cm and Near-infrared Backgrounds

open access: yesThe Astrophysical Journal
The timeline of cosmic reionization remains uncertain despite sustained efforts to study how the ionizing output of early galaxies shaped the intergalactic medium (IGM).
Guochao Sun   +4 more
doaj   +1 more source

A Portrait of the Cosmic Reionization History in the Context of the Early Dark Energy Model

open access: yesThe Astrophysical Journal
Recent JWST observations of Ly α emission at z  ∼ 11–6 indicate a rapid reionization of the intergalactic medium within the first ∼700 Myr. The required Lyman continuum (LyC) photon budget may naturally arise from the unexpectedly high galaxy number ...
Weiyang Liu   +5 more
doaj   +1 more source

The infancy of cosmic reionization [PDF]

open access: yesMonthly 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

Revised Active Galactic Nuclei Spectral Model Reveals a More Significant Role in Cosmic Reionization

open access: yesThe Astrophysical Journal Letters
Reionization marks one of the most important phase transitions in the history of the Universe, during which neutral baryonic matter was transformed into ionized plasma.
Tong Su   +3 more
doaj   +1 more source

Efficient modeling of Lyman-α opacity fluctuations during the late reionization epoch

open access: yesAstronomy & Astrophysics
The Lyman-α forest opacity fluctuations observed from high-redshift quasar spectra have been proven to be extremely successful in probing the late phase of the reionization epoch.
Maity Barun   +2 more
doaj   +1 more source

Simulating Inhomogeneous Reionization

open access: yes, 1998
8 pages, 0 figures. To appear in Proceedings of the Workshop on H_2 in the Early Universe, eds. F. Palla, E. Corbelli, and D. Galli, Memorie Della Societa Astronomica Italiana, in press (1998)
Norman, Michael L.   +2 more
openaire   +2 more sources

Reionization Parameter Inference from 3D Minkowski Functionals of the 21 cm Signals

open access: yesThe Astrophysical Journal
The Minkowski functionals (MFs), a set of topological summary statistics, have emerged as a powerful tool for extracting non-Gaussian information.
Kangning Diao   +3 more
doaj   +1 more source

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