Results 31 to 40 of about 36,124 (299)
The reionization of carbon [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 Observations suggest that CII was more abundant than CIV in the intergalactic medium towards the end of the hydrogen reionization epoch. This transition provides a unique opportunity to study the enrichment history of intergalactic gas and the growth of the ionizing background (UVB) at early times.
Robert Thompson +6 more
openaire +4 more sources
Reionization and galaxy inference from the high-redshift Lyα forest [PDF]
, 2021 The transmission of Lyman-α (Lyα) in the spectra of distant quasars depends on the density, temperature, and ionization state of the intergalactic medium (IGM).
Y. Qin, A. Mesinger, S. Bosman, M. Viel
semanticscholar +1 more source
The mean free path of ionizing photons at 5 < z < 6: evidence for rapid evolution near reionization [PDF]
Monthly notices of the Royal Astronomical Society, 2021 The mean free path of ionizing photons, λmfp, is a key factor in the photoionization of the intergalactic medium (IGM). At z ≳ 5, however, λmfp may be short enough that measurements towards QSOs are biased by the QSO proximity effect.
G. Becker +5 more
semanticscholar +1 more source
CEMPlifying reionization [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 The massive stars that ionised the Universe have short lifetimes and can only be studied near the time of formation, but any low mass stars that formed contemporaneously might be observable in the local Universe today. We study the abundance pattern and spatial distribution of these `siblings of reionizers' (SoRs) in the EAGLE cosmological ...
Mahavir Sharma, Tom Theuns, Carlos Frenk
openaire +3 more sources
The THESAN project: properties of the intergalactic medium and its connection to Reionization-era galaxies [PDF]
, 2021 The high-redshift intergalactic medium (IGM) and the primeval galaxy population are rapidly becoming the new frontier of extra-galactic astronomy.
E. Garaldi +6 more
semanticscholar +1 more source
The Epoch of Reionization in Warm Dark Matter Scenarios
Universe, 2021 In this paper we investigate how the Reionization process is affected by early galaxy formation in different cosmological scenarios. We use a semi-analytic model with suppressed initial power spectra to obtain the UV Luminosity Function in thermal Warm ...
Massimiliano Romanello +2 more
doaj +1 more source
The Evolution of the Lyman-alpha Luminosity Function during Reionization [PDF]
Astrophysical Journal, 2021 The time frame in which hydrogen reionization occurred is highly uncertain, but can be constrained by observations of Lyman-alpha (Lyα) emission from distant sources.
Alexa M. Morales +5 more
semanticscholar +1 more source
A Short Mean Free Path at z = 6 Favors Late and Rapid Reionization by Faint Galaxies [PDF]
Astrophysical Journal Letters, 2021 Recent measurements of the ionizing photon mean free path ( λ912mfp ) at 5 < z < 6 suggest that the IGM was rapidly evolving at those times. We use radiative transfer simulations to explore the implications for reionization, with a focus on the short ...
C. Cain +3 more
semanticscholar +1 more source
The Astrophysical Journal, 2023 We use large simulations of Ly α emitters with different fractions of ionized intergalactic medium to quantify the clustering of Ly α emitters as measured by the void probability function (VPF), and how it evolves under different ionization scenarios. We
Lucia A. Perez +3 more
doaj +1 more source
Reionization in Technicolor [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 We present the Technicolor Dawn simulations, a suite of cosmological radiation-hydrodynamic simulations of the first 1.2 billion years. By modeling a spatially-inhomogeneous UVB on-the-fly with 24 frequencies and resolving dark matter halos down to $10^8 M_\odot$ within 12 $h^{-1}$ Mpc volumes, our simulations unify observations of the intergalactic ...
Laura C. Keating +5 more
openaire +4 more sources