Results 81 to 90 of about 26,307 (200)
The Astrophysical JournalWe present a statistical analysis of Ly α absorption using 581 galaxies at z = 4.5–13 observed with multiple JWST/NIRSpec spectroscopy programs, including JADES, UNCOVER, CEERS, and GO/DDT. We carefully construct composite spectra binned by redshift with
Hiroya Umeda +6 more
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Large-angle Polarization of the Cosmic Microwave Background Radiation and Reionization
, 1995 We discuss the effect of matter reionization on the large-angular-scale anisotropy and polarization of the cosmic microwave background radiation (CMBR) in the standard CDM model.
figures, 10 +5 more
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The Astrophysical JournalThe kinetic Sunyaev–Zel’dovich effect (kSZ) and patchy screening effect are two complementary cosmic microwave background (CMB) probes of the reionization era.
Darby Kramer +7 more
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Unusually Large Fluctuations in the Statistics of Galaxy Formation at High Redshift
, 2012 We show that various milestones of high-redshift galaxy formation, such as the formation of the first stars or the complete reionization of the intergalactic medium, occurred at different times in different regions of the universe.
Aghanim N. +5 more
core +1 more source
The Astrophysical Journal Supplement SeriesWe present the statistical properties of Ly α emission in 586 galaxies at z = 4.5–14.2, observed by multiple JWST/NIRSpec spectroscopy projects, including the JADES, GLASS, CEERS, and GO/DDT programs.
Yuta Kageura +8 more
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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
, 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 ...
C. S. Frenk +4 more
core +3 more sources
Small-scale CMB Temperature and Polarization Anisotropies due to Patchy Reionization
, 2003 We study contributions from inhomogeneous (patchy) reionization to arcminute scale ($1000 < \ell < 10,000$) cosmic microwave background (CMB) anisotropies. We show that inhomogeneities in the ionization fraction, rather than in the mean density, dominate
Aghanim N. +10 more
core +1 more source
A deep learning model to emulate simulations of cosmic reionization [PDF]
, 2019 Jonathan Chardin +6 more
openalex +1 more source
Do Minihalos Affect Cosmic Reionization?
The Astrophysical JournalThe role of unresolved structures (“minihalos”) in determining the consumption of ionizing photons during cosmic reionization remains an unsolved problem in modeling cosmic reionization, despite recent extensive studies with small-box high-resolution ...
Nickolay Y. Gnedin
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