Results 31 to 40 of about 22,853 (217)
Characterizing the epoch of reionization with the small-scale CMB: Constraints on the optical depth and duration [PDF]
, 2018 Patchy reionization leaves a number of imprints on the small-scale cosmic microwave background (CMB) temperature fluctuations, the largest of which is the kinematic Sunyaev-Zel'dovich (kSZ), the Doppler shift of CMB photons scattering off moving ...
Ferraro, S, Smith, KM
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Detecting Helium Reionization with Fast Radio Bursts
, 2020 Fast radio bursts (FRB) probe the electron density of the universe along the path of propagation, making high redshift FRB sensitive to the helium reionization epoch.
Linder, Eric V.
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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
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Early reionization in cosmology [PDF]
Infrared Physics & Technology, 1994 The cosmic microwave background (CMB) anisotropies have turned out to represent one of the most stringent 'bottle necks' for scenarios of large scale structure formation. As a possibility to relax this constraint, it has been proposed that early reionization can damp CMB fluctuations on small scales due to photon diffusion in the ionized plasma.
openaire +3 more sources
Patchy Kinetic Sunyaev–Zel’dovich Effect with Controlled Reionization History and Morphology
The Astrophysical Journal, 2023 Using the novel semi-numerical code for reionization AMBER, we model the patchy kinetic Sunyaev–Zel’dovich (kSZ) effect by directly specifying the reionization history with the redshift midpoint z _mid , duration Δ _z , and asymmetry A _z .
Nianyi Chen +3 more
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Reionization and Beyond: detecting the peaks of the cosmological 21cm signal [PDF]
, 2014 [ABRIDGED] The cosmological 21cm signal is set to become the most powerful probe of the early Universe, with first generation interferometers aiming to make statistical detections of reionization. There is increasing interest also in the pre-reionization
Ewall-Wice, Aaron +2 more
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Astronomy & AstrophysicsAims. The escape fraction of Lyman continuum photons (fesc(LyC)) is the last key unknown in our understanding of cosmic reionization. Directly estimating the escape fraction (fesc) of ionizing photons in the epoch of reionization (EoR) is impossible, due
Giovinazzo Emma +17 more
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Reionization Histories of Milky Way Mass Halos
, 2013 We investigate the connection between the epoch of reionization and the present day universe, by examining the extended mass reionization histories of dark matter halos identified at z=0.
Abel, Tom +3 more
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Perspectives for Cosmological Reionization From Future CMB and Radio Projects
Frontiers in Astronomy and Space Sciences, 2018 In spite of the great recent results from the Planck satellite supporting cosmological reionization scenarios almost compatible with astrophysical models for the evolution of structure, galaxy and star formation, the full understanding of the ...
Tiziana Trombetti +4 more
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The Effects of Patchy Reionization on Satellite Galaxies of the Milky Way
, 2012 We combine the high-resolution Aquarius simulations with three-dimensional models of reionization based on the initial density field of the Aquarius parent simulation, Millennium-II, to study the impact of patchy reionization on the faint satellite ...
Adam Lidz +54 more
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