Observing the reionization epoch through 21-centimetre radiation

@article{Furlanetto2004ObservingTR,
  title={Observing the reionization epoch through 21-centimetre radiation},
  author={Steven R. Furlanetto and Aaron Sokasian and Lars Hernquist},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2004},
  volume={347},
  pages={187-195}
}
We study the observability of the reionization epoch through the 21-cm hyperfine transition of neutral hydrogen. We use a high-resolution cosmological simulation (including hydrodynamics) together with a fast radiative transfer algorithm to compute the evolution of 21-cm emission from the intergalactic medium (IGM) in several different models of reionization. We show that the mean brightness temperature of the IGM drops from δTb ∼ 25 mK to ∼10 −2 mK during overlap (over a frequency interval… 

Figures from this paper

Redshifted 21 centimeter emission from the pre-reionization era. I. Mean signal and linear fluctuations
We use cosmological simulations of reionization to predict the possible signal from the redshifted 21 cm line of neutral hydrogen in the pre-reionization era and to investigate the observability of
Observational Constraints on Cosmic Reionization
Observations have set the first constraints on the epoch of reionization (EoR), corresponding to the formation epoch of the first luminous objects. Studies of GunnPeterson (GP) absorption indicate a
Reionization history from coupled cosmic microwave background/21-cm line data
We study cosmic microwave background (CMB) secondary anisotropies produced by inhomogeneous reionization by means of cosmological simulations coupled with the radiative transfer code CRASH. The
Simulating cosmic reionization at large scales – II. The 21-cm emission features and statistical signals
We present detailed predictions for the redshifted 21-cm signal from the epoch of reionization. These predictions are obtained from radiative transfer calculations on the results of large-scale (100
Statistical Probes of Reionization with 21 Centimeter Tomography
We consider the degree to which 21 cm tomography of the high-redshift universe can distinguish different ionization histories. Using a new analytic model for the size distribution of H II regions
The Growth of H II Regions During Reionization
Recently, there has been a great deal of interest in understanding the reionization of hydrogen in the intergalactic medium (IGM). One of the major outstanding questions is how this event proceeds on
Radio views of cosmic reionization
We use numerical simulations of cosmic reionization and radiative processes related to the HI 21 cm emission line to produce synthetic radio maps as seen by next generation telescopes that will
Cosmic reionization by stellar sources: population III stars
We combine fast radiative transfer calculations with high-resolution hydrodynamical simulations to study an epoch of early hydrogen reionization by primordial stellar sources at redshifts 15 ≤ z ≤
Cosmic Reionization and the 21 cm Signal: Comparison between an Analytical Model and a Simulation
We measure several properties of the reionization process and the corresponding low-frequency 21 cm signal associated with the neutral hydrogen distribution, using a large volume, high-resolution
Signatures of the Baryon Acoustic Oscillations on 21 cm Emission Background
The baryon acoustic oscillations (BAOs) prior to recombination should be imprinted onto the 21 cm emission background from the epoch of reionization through the underlying density perturbations.
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 49 REFERENCES
Constraints on reionization from the thermal history of the intergalactic medium
The temperature of the diffuse, photoheated intergalactic medium (IGM) depends on its reionization history because the thermal timescales are long. The widths of the hydrogen Lyα absorption lines
H I 21 Centimeter Absorption beyond the Epoch of Reionization
We explore the possibility of detecting H I 21 cm absorption by the neutral intergalactic medium (IGM) toward very high redshift radio sources. The epoch considered is between the time when the first
Simulating intergalactic medium reionization
We have studied the intergalactic medium (IGM) reionization process in its full cosmological context, including structure evolution and a realistic galaxy population. We have used a combination of
21 CENTIMETER TOMOGRAPHY OF THE INTERGALACTIC MEDIUM AT HIGH REDSHIFT
We investigate the 21 cm signature that may arise from the intergalactic medium (IGM) prior to the epoch of full reionization (z > 5). In scenarios in which the IGM is reionized by discrete sources
Cosmological Hydrogen Reionization with Three-dimensional Radiative Transfer
We present new calculations of the inhomogeneous process of cosmological reionization by carefully following the radiative transfer in precomputed hydrodynamic simulations of galaxy formation. These
Evolution of the ionizing background and the epoch of reionization from the spectra of z ∼ 6 quasars
We study the process of cosmic reionization and estimate the ionizing background in the intergalactic medium (IGM) using the Lyman series absorption in the spectra of the four quasars at 5.7 3) are
On the Threshold of the Reionization Epoch
Discovery of the cosmic reionization epoch would represent a significant milestone in cosmology. We present Keck spectroscopy of the quasar SDSS 1044-0125, at z = 5.73. The spectrum shows a dramatic
Simulating IGM Reionization
We have studied the IGM reionization process in its full cosmological context including structure evolution and a realistic galaxy population. We have used a combination of high-resolution N-body
The Reionization History at High Redshifts. I. Physical Models and New Constraints from Cosmic Microwave Background Polarization
The recent discovery of a high optical depth τ to Thomson scattering from the Wilkinson Microwave Anisotropy Probe (WMAP) data implies that significant reionization took place at redshifts z > 6.
Simulating reionization in numerical cosmology
Abstract The incorporation of radiative transfer effects into cosmological hydrodynamical simulations is essential for understanding how the intergalactic medium (IGM) makes the transition from a
...
1
2
3
4
5
...