Results 21 to 30 of about 8,595 (212)
Astraeus I:The interplay between galaxy formation and reionization [PDF]
, 2021 We introduce a new self-consistent model of galaxy evolution and reionization, ASTRAEUS (seminumerical rAdiative tranSfer coupling of galaxy formaTion and Reionization in N-body dArk mattEr simUlationS), which couples a state-of-the-art N-body simulation
Ucci, Graziano +14 more
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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
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Cosmological reionization [PDF]
Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 2000 In popular cosmological scenarios, some time beyond a redshift of 10, stars within protogalaxies created the first heavy elements; these systems, together perhaps with an early population of quasars, generated the ultraviolet radiation and mechanical energy that reheated and reionized the cosmos.
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The Astrophysical Journal, 2023 Baryons both increase halo concentration through adiabatic contraction and expel mass through feedback processes. However, it is not well understood how the radiation fields prevalent during the epoch of reionization affect the evolution of concentration
Hanjue Zhu, Nickolay Y. Gnedin
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A local clue to the reionization of the universe [PDF]
Science, 2014 Identifying the population of galaxies that was responsible for the reionization of the universe is a long-standing quest in astronomy. We present a possible local analog that has an escape fraction of ionizing flux of 21%. Our detection confirms the existence of gaps in the neutral gas enveloping the starburst region.
Borthakur, Sanchayeeta +3 more
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Simulating the Cosmic Dawn With Enzo
Frontiers in Astronomy and Space Sciences, 2018 We review two decades of progress using the Enzo hydrodynamic cosmology code to simulate the Cosmic Dawn, a period of roughly 1 billion years beginning with the formation of the first stars in the universe, and ending with cosmic reionization.
Michael L. Norman +5 more
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Probing Reionization with Currently Available Observables
, 2022 The reionization of hydrogen -- the era when the intergalactic gas turned from cold and neutral to hot and highly ionized when the universe was hundreds of millions of years old -- remains one of the biggest mysteries in astronomy research.
Wu, Xiaohan
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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.
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THE CONTRIBUTION OF SUPERNOVAE TO COSMIC REIONIZATION [PDF]
The Astrophysical Journal, 2011 12 pages, 4 figures; ApJ in ...
Johnson, J., Khochfar, S.
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Simulating Cosmic Reionization at Large Scales I: the Geometry of Reionization [PDF]
Monthly Notices of the Royal Astronomical Society, 2005 We present the first large-scale radiative transfer simulations of cosmic reionization, in a simulation volume of (100/h Mpc)^3, while at the same time capturing the dwarf galaxies which are primarily responsible for reionization. We achieve this by combining the results from extremely large, cosmological, N-body simulations with a new, fast and ...
Iliev, Ilian T. +5 more
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