Results 181 to 190 of about 34,994 (298)
The Inhomogeneous Reionization Times of Present-day Galaxies [PDF]
, 2018 Today's galaxies experienced cosmic reionization at different times in different locations. For the first time, reionization ($50\%$ ionized) redshifts, $z_R$, at the location of their progenitors are derived from new, fully-coupled radiation-hydrodynamics simulation of galaxy formation and reionization at $z > 6$, matched to N-body simulation to z = 0.
arxiv +1 more source
Semi-Numerical Simulation of Reionization with Semi-Analytical Modeling of Galaxy Formation
, 2012 In a semi-numerical model of reionization, the evolution of ionization fraction is simulated approximately by the ionizing photon to baryon ratio criterion.
Chen, Xuelei +5 more
core +1 more source
The Astrophysical JournalWe present the evolution of Ly α emission derived from 53 galaxies at z = 6.6–13.2, which have been identified by multiple JWST/NIRSpec spectroscopy programs of Early Release Science, General Observer, Director's Discretionary Time, and Guaranteed Time ...
Minami Nakane +8 more
doaj +1 more source
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
core
The Imprint of Cosmic Reionization on Galaxy Clustering
, 2007 We consider the effect of reionization on the clustering properties of galaxy samples at intermediate redshifts (z~0.3-5.5). Current models for the reionization of intergalactic hydrogen predict that overdense regions will be reionized early, thus ...
A. Loeb, J. S. B. Wyithe, Kriss
core +1 more source
Cosmic Reionization in the JWST Era: Back to AGNs?
The Astrophysical JournalDeep surveys with the James Webb Space Telescope (JWST) have revealed an emergent population of moderate-luminosity, broad-line active galactic nuclei (AGNs) at 4 ≲ z ≲ 13 powered by accretion onto early massive black holes.
Piero Madau +3 more
doaj +1 more source
A study of simulated histories of reionization with merger trees of HII regions
, 2012 We describe a new methodology to analyze the reionization process in numerical simulations: the chronology and the geometry of reionization is investigated by means of merger histories of individual HII regions.
Aubert, Dominique +2 more
core +1 more source
Perspectives on fundamental cosmology from Low Earth Orbit and the Moon. [PDF]
NPJ Microgravity, 2023 Bertone G, Buchmueller OL, Cole PS.
europepmc +1 more source
Reionization of the Intergalactic Medium
, 2014 Review Lecture given at New Horizons for Observational Cosmology, International School of Physics Enrico Fermi, Varenna, July 1-6, 2013, eds. A. Melchiorri, A. Cooray, E. Komatsu, to be published by the Italian Society of Physics.
Stefania Pandolfi, Andrea Ferrara
openaire +3 more sources
The Astrophysical JournalThe initial density distribution provides a basis for understanding the complete evolution of cosmological density fluctuations. While reconstruction in our local Universe exploits the observations of galaxy surveys with large volumes, observations of ...
Meng Zhou, Yi Mao
doaj +1 more source