Results 71 to 80 of about 27,730 (253)
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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Reionization of the Local Group of galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2011 We present the first detailed structure formation and radiative transfer simulations of the reionization history of our cosmic neighbourhood. To this end, we follow the formation of the Local Group of galaxies and nearby clusters by means of constrained simulations, which use the available observational constraints to construct a representation of ...
Garrelt Mellema +6 more
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The Topology of Cosmological Reionization [PDF]
The Astrophysical Journal, 2008 9 pages, 6 figures, accepted by ...
Hy Trac +3 more
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Signatures of X-rays in the early Universe [PDF]
, 2013 [abridged] With their long mean free paths and efficient heating of the intergalactic medium (IGM), X-rays could have a dramatic impact on the thermal and ionization history of the Universe.
Ferrara, Andrea +2 more
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Impact of inhomogeneous reionization on post-reionization 21 cm intensity mapping measurement of cosmological parameters [PDF]
arXiv, 2022 21 cm intensity mapping (IM) has the potential to be a strong and unique probe of cosmology from redshift of order unity to redshift potentially as high as 30. For post-reionization 21 cm observations, the signal is modulated by the thermal and dynamical reaction of gas in the galaxies to the passage of ionization fronts during the Epoch of ...
arxiv
The Effects of Patchy Reionization on Satellite Galaxies of the Milky Way
, 2012 We combine the high-resolution Aquarius simulations with three-dimensional models of reionization based on the initial density field of the Aquarius parent simulation, Millennium-II, to study the impact of patchy reionization on the faint satellite ...
Adam Lidz +54 more
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Approximate Analytic Spectra of Reionized CMB Anisotropies and Polarization generated by Relic Gravitational Waves [PDF]
Phys.Rev.D79:083002,2009, 2009 We present an approximate, analytical calculation of the reionized spectra $C_l^{XX}$ of cosmic microwave background radiation (CMB) anisotropies and polarizations generated by relic gravitational waves (RGWs). Three simple models of reionization are explored, whose visibility functions are fitted by gaussian type of functions as approximations.
arxiv +1 more source
Simulating cosmic reionization at large scales - I. The geometry of reionization [PDF]
Monthly Notices of the Royal Astronomical Society, 2006 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 ...
Hugh Merz +5 more
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What Next-Generation 21 cm Power Spectrum Measurements Can Teach Us About the Epoch of Reionization [PDF]
, 2013 A number of experiments are currently working towards a measurement of the 21 cm signal from the Epoch of Reionization. Whether or not these experiments deliver a detection of cosmological emission, their limited sensitivity will prevent them from ...
Aguirre, James E. +14 more
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Reionization of the Inhomogeneous Universe
The Astrophysical Journal, 2000 to be published in The Astrophysical ...
Martin G. Haehnelt +5 more
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