Results 51 to 60 of about 27,730 (253)
Perspectives for Cosmological Reionization From Future CMB and Radio Projects
Frontiers in Astronomy and Space Sciences, 2018 In spite of the great recent results from the Planck satellite supporting cosmological reionization scenarios almost compatible with astrophysical models for the evolution of structure, galaxy and star formation, the full understanding of the ...
Tiziana Trombetti +4 more
doaj +1 more source
Impact of general reionization scenarios on extraction of inflationary parameters [PDF]
, 2010 Determination of whether the Harrison--Zel'dovich spectrum for primordial scalar perturbations is consistent with observations is sensitive to assumptions about the reionization scenario.
Alessandro Melchiorri +9 more
core +4 more sources
Dust distribution during reionization [PDF]
Astronomy & Astrophysics, 2007 The dust produced by the first generation of stars will be a foreground to cosmic microwave background. In order to evaluate the effect of this early dust, we calculate the power spectrum of the dust emission anisotropies and compare it with the sensitivity limit of the Planck satellite.
Elfgren, E. +2 more
openaire +6 more sources
Lyα leaks and reionization [PDF]
Monthly Notices of the Royal Astronomical Society, 2008 Comment: 11 pages including 10 figures, accepted for publication in ...
Jiren Liu +4 more
openaire +4 more sources
The Astrophysical Journal, 2023 We report the most sensitive upper limits to date on the 21 cm epoch of reionization power spectrum using 94 nights of observing with Phase I of the Hydrogen Epoch of Reionization Array (HERA).
The HERA Collaboration: Zara Abdurashidova +93 more
doaj +1 more source
Inhomogeneous recombinations during cosmic reionization [PDF]
, 2014 By depleting the ionizing photon budget available to expand cosmic HII regions, recombining systems (or Lyman limit systems) can have a large impact during (and following) cosmic reionization.
Mesinger, Andrei, Sobacchi, Emanuele
core +1 more source
Connecting Reionization to the Local Universe [PDF]
Astrophys.J.703:L167-L171,2009, 2008 We present results of combined N-body and three-dimensional reionization calculations to determine the relationship between reionization history and local environment in a volume 1 Gpc/h across and a resolution of about 1 Mpc. We resolve the formation of about 2x10^6 halos of mass greater than ~10^12 Msun at z=0, allowing us to determine the ...
arxiv +1 more source
The infancy of cosmic reionization [PDF]
Monthly Notices of the Royal Astronomical Society, 2008 We consider the early stages of cosmic hydrogen or helium reionization, when ionizing sources were still rare. We show that Poisson fluctuations in the galaxy distribution substantially affected the early bubble size distribution, although galaxy clustering was also an essential factor even at the earliest times.
Rennan Barkana, Rennan Barkana
openaire +6 more sources
Geophysical Research Letters, Volume 47, Issue 20, 28 October 2020., 2020 Abstract We report the first simultaneous, common‐volume lidar observations of thermosphere‐ionosphere Fe (TIFe) and Na (TINa) layers in Antarctica. We also report the observational discovery of nearly one‐to‐one correspondence between TIFe and aurora activity, enhanced ionization layers, and converging electric fields.
Xinzhao Chu +6 more
wiley +1 more source
Astronomy & Astrophysics, 2004 6 pages, 8 figures, accepted by A&A; clarifications made, typos fixed, results more exactly ...
Elfgren, Erik, Désert, Francois-Xavier
openaire +5 more sources