Results 111 to 120 of about 27,730 (253)
The Astrophysical Journal Letters, 2023 Studies of rest-frame optical emission in quasars at z > 6 have historically been limited by the wavelengths accessible by ground-based telescopes. The James Webb Space Telescope (JWST) now offers the opportunity to probe this emission deep into the ...
Jinyi Yang +55 more
doaj +1 more source
, 2009 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.
Abraham Loeb +73 more
core +1 more source
Cosmic reionization constraints on the nature of cosmological perturbations [PDF]
, 2006 We study the reionization history of the Universe in cosmological models with non-Gaussian density fluctuations, taking them to have a renormalized $\chi^2$ probability distribution function parametrized by the number of degrees of freedom, $\nu$.
Avelino, Pedro P, Liddle, Andrew R
core +2 more sources
The reionization of galactic satellite populations [PDF]
, 2014 We use high resolution simulations of the formation of the local group post-processed by a radiative transfer code for UV photons, to investigate the reionization of the satellite populations of an isolated Milky Way-M31 galaxy pair in a variety of scenarios. We use an improved version of ATON which includes a simple recipe for radiative feedback.
arxiv +1 more source
Hydrogen reionization in the Illustris universe [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 Hydrodynamical simulations of galaxy formation such as the Illustris simulations have progressed to a state where they approximately reproduce the observed stellar mass function from high to low redshift. This in principle allows self-consistent models of reionization that exploit the accurate representation of the diffuse gas distribution together ...
Volker Springel +8 more
openaire +6 more sources
Cosmic Reionization on Computers: The Evolution of the Ionizing Background and Mean Free Path
The Astrophysical JournalObservations 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
Early Results from GLASS-JWST. XXIII. The Transmission of Lyα from UV-faint z ∼ 3–6 Galaxies
The Astrophysical Journal, 2023 Ly α emission from galaxies can be used to trace neutral hydrogen in the epoch of reionization, however, there is a degeneracy between the attenuation of Ly α in the intergalactic medium (IGM) and the line profile emitted by the galaxy.
Gonzalo Prieto-Lyon +20 more
doaj +1 more source
The Thermal Memory of Reionization History [PDF]
, 2003 The recent measurement by WMAP of a large electron scattering optical depth tau_e = 0.17 +- 0.04 is consistent with a simple model of reionization in which the intergalactic medium (IGM) is ionized at redshift z ~ 15, and remains highly ionized ...
Berezhiani Z. G. +7 more
core +2 more sources
Reionization Parameter Inference from 3D Minkowski Functionals of the 21 cm Signals
The Astrophysical JournalThe 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
The First Galaxies and the Likely Discovery of Their Fossils in the Local Group
Advances in Astronomy, 2010 The lower bound for the mass of a galaxy is unknown, as are the typical luminosity of the smallest galaxies and their numbers. The answers depend on the extent to which star formation in the first population of small mass halos may be suppressed by ...
Massimo Ricotti
doaj +1 more source