Results 111 to 120 of about 22,853 (217)

Connecting Reionization to the Local Universe

, 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
Abel, Alvarez, Becker, Bullock, Busha, Dijkstra, Fan, Furlanetto, Gao, Gnedin, Gnedin, Klypin, Komatsu, Lacey, Marcelo A. Alvarez, Mesinger, Michael Busha, Miralda-Escudé, Moore, Risa H. Wechsler, Spergel, Tom Abel, Trac, Wechsler, White, Willott, Wise, Yoshida, Zahn   +28 more
core   +1 more source

Probing Reionization with the 21 cm-Galaxy Cross Power Spectrum

, 2008
The cross-correlation between high redshift galaxies and 21 cm emission from the high redshift intergalactic medium (IGM) promises to be an excellent probe of the Epoch of Reionization (EoR).
Adam Lidz, Barkana, Bouwens, Bowman, Ciardi, Dijkstra, Furlanetto, Furlanetto, Gnedin, Haiman, Kashikawa, Komatsu, Lars Hernquist, Lidz, Lidz, Madau, Matias Zaldarriaga, Matthew McQuinn, McQuinn, Mesinger, Miralda Escudé, Miralda Escudé, Navarro, Oliver Zahn, Ouchi, Pritchard, Rhoads, Scoccimarro, Scott, Shapley, Spergel, Stark, Steven R. Furlanetto, Tegmark, Wyithe, Wyithe, Zahn, Zaldarriaga   +37 more
core   +1 more source

The effect of peculiar velocities on the epoch of reionization (EoR) 21-cm signal

, 2013
We have used semi-numerical simulations of reionization to study the behaviour of the power spectrum of the EoR 21-cm signal in redshift space. We have considered two models of reionization, one which has homogeneous recombination (HR) and the other ...
Bharadwaj, Somnath, Choudhury, T. Roy, Majumdar, Suman   +2 more
core   +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.
openaire   +3 more sources

Simulating Inhomogeneous Reionization

, 1998
8 pages, 0 figures. To appear in Proceedings of the Workshop on H_2 in the Early Universe, eds. F. Palla, E. Corbelli, and D. Galli, Memorie Della Societa Astronomica Italiana, in press (1998)
Norman, Michael L., Paschos, Paschalis, Abel, Tom   +2 more
openaire   +2 more sources

LIMFAST. III. Timing Cosmic Reionization with the 21 cm and Near-infrared Backgrounds

The Astrophysical Journal
The timeline of cosmic reionization remains uncertain despite sustained efforts to study how the ionizing output of early galaxies shaped the intergalactic medium (IGM).
Guochao Sun, Adam Lidz, Tzu-Ching Chang, Jordan Mirocha, Steven R. Furlanetto   +4 more
doaj   +1 more source

A Portrait of the Cosmic Reionization History in the Context of the Early Dark Energy Model

The Astrophysical Journal
Recent JWST observations of Ly α emission at z  ∼ 11–6 indicate a rapid reionization of the intergalactic medium within the first ∼700 Myr. The required Lyman continuum (LyC) photon budget may naturally arise from the unexpectedly high galaxy number ...
Weiyang Liu, Xin Wang, Hu Zhan, Karl Glazebrook, Mengtao Tang, Michele Trenti   +5 more
doaj   +1 more source

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., Cole S., Fukugita M., Kodaira K., Mo H. J., White S. D. M.   +5 more
core   +1 more source

The effect of reionization on the CMB-density correlation

, 2007
In this paper we show how the rescattering of CMB photons after cosmic reionization can give a significant linear contribution to the temperature-matter cross-correlation measurements.
Crittenden, R. Crittenden, T. Giannantonio   +2 more
core   +1 more source

Efficient modeling of Lyman-α opacity fluctuations during the late reionization epoch

Astronomy & Astrophysics
The Lyman-α forest opacity fluctuations observed from high-redshift quasar spectra have been proven to be extremely successful in probing the late phase of the reionization epoch.
Maity Barun, Davies Frederick, Gaikwad Prakash   +2 more
doaj   +1 more source