Results 31 to 40 of about 830 (187)
How is the reionization epoch defined? [PDF]
Monthly Notices of the Royal Astronomical Society, 2002 We study the effect of a prolonged epoch of reionization on the angular power spectrum of the Cosmic Microwave Background. Typically reionization studies assume a sudden phase transition, with the intergalactic gas moving from a fully neutral to a fully ionized state at a fixed redshift. Such models are at odds, however, with detailed investigations of
Bruscoli, Marialuce +2 more
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Reionizing Islands with Inhomogeneous Recombinations
Research in Astronomy and Astrophysics, 2023 Abstract Observations are beginning to constrain the history of the epoch of reionization (EoR). Modeling the reionization process is indispensable to interpret the observations, to infer the properties of ionizing sources, and to probe the various astrophysical processes from the observational data.
Runyu 润玉 Zhu 朱 +3 more
openaire +2 more sources
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
Angewandte Chemie International Edition, EarlyView.This work focuses on how to improve the selectivity and activity of electrocatalytic CO2 reduction to C3+ products, by the integration of electrocatalyst and electrolyte co‐design. We summarize key C3+ formation mechanisms and provide a comprehensive reaction network through thermodynamic analysis.
Ling Chen, Damien Voiry, Yan Jiao
wiley +1 more source
The galaxies that reionized the Universe
, 2010 14 pages, 13 figures, paper accepted for publication in ...
Raičević, Milan +2 more
openaire +5 more sources
Effect of primordial black holes on the global 21 cm signal
Astronomy & AstrophysicsThe 21 cm global signal, a treasure trove of information about the nature of the first luminous sources of the Universe, has traditionally been modelled assuming that these early sources were predominantly star-forming galaxies.
Chatterjee Atrideb
doaj +1 more source
Dynamics of Purification in Cu2O
physica status solidi (b), Volume 263, Issue 3, March 2026.Rydberg excitons in Cu2O have been shown to be highly efficient in neutralizing and screening charged impurities, which is referred to as purification. In this manuscript, the dynamics of the purification process are investigated under varying probe exciton‐ and plasma density. The transient absorption of Rydberg excitons is analyzed and five different
Binodbihari Panda +3 more
wiley +1 more source
Modelling reionization in a bursty universe [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 17 pages, 11 figures, 1 table.
Hartley, Blake, Ricotti, Massimo
openaire +2 more sources
Asking Fast Radio Bursts for More than Reionization History
The Astrophysical JournalWe propose different estimators to probe the intergalactic medium (IGM) during the epoch of reionization (EoR) using the dispersion measure (DM) of the fast radio bursts. We consider three different reionization histories, which we can distinguish with a
Abinash Kumar Shaw +4 more
doaj +1 more source
First Observations and Characteristics of Positive Upward Illumination Strokes
Geophysical Research Letters, Volume 53, Issue 1, 16 January 2026.Abstract Upward Illumination (UI) strokes are a subtype of cloud‐to‐ground (CG) return strokes characterized by two concurrent branches striking the ground a few milliseconds apart. The luminous channel of an UI stroke does not connect to the main channel, which gives this phenomenon its name.
Antonio C. V. Saraiva +10 more
wiley +1 more source