Lyα Emitting Galaxies as a Probe of Reionisation

@article{Dijkstra2014LyEG,
  title={Ly$\alpha$ Emitting Galaxies as a Probe of Reionisation},
  author={Mark Dijkstra},
  journal={Publications of the Astronomical Society of Australia},
  year={2014},
  volume={31}
}
  • M. Dijkstra
  • Published 27 June 2014
  • Physics
  • Publications of the Astronomical Society of Australia
Abstract The Epoch of Reionization (EoR) represents a milestone in the evolution of our Universe. Star-forming galaxies that existed during the EoR likely emitted a significant fraction ( ~ 5 − 40%) of their bolometric luminosity as Lyα line emission. However, neutral intergalactic gas that existed during the EoR was opaque to Lyα emission that escaped from galaxies during this epoch, which makes it difficult to observe. The neutral intergalactic medium (IGM) may thus reveal itself by… 
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169 Citations
Highly Influential Citations
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Background Citations
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Methods Citations
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Results Citations
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  • Physics
    Publications of the Astronomical Society of Australia
  • 2015
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References

SHOWING 1-10 OF 230 REFERENCES
The detectability of Lyα emission from galaxies during the epoch of reionization
We study the visibility of the Lyα emission line during the epoch of reionization. Combining galactic outflow models with large-scale seminumeric simulations of reionization, we quantify the…
The effects of reionization on Lyα galaxy surveys
Searches for Lya emission lines are among the most effective ways to identify high-redshift galaxies. They are particularly interesting because they probe not only the galaxies themselves but also…
Mapping Neutral Hydrogen during Reionization with the Lyα Emission from Quasar Ionization Fronts
We present a new method to directly map the neutral-hydrogen distribution during the reionization epoch and constrain the emission properties of the highest redshift quasars (QSOs). As a tracer of H…
Models for Dusty Lyα Emitters at High Redshift
Models are presented for the Lyα emission of dusty high-redshift galaxies by combining the Press-Schechter formalism with a treatment of the inhomogeneous dust distribution inside galaxies. It is…
Seeing through the trough: outflows and the detectability of Lyα emission from the first galaxies
The next generation of telescopes aim to directly observe the first generation of galaxies that initiated the reionization process in our Universe. The Lyα emission line is robustly predicted to be…
Scattered Lyα Radiation around Sources before Cosmological Reionization
The spectra of the first galaxies and quasars in the universe should be strongly absorbed shortward of their rest-frame Lyα wavelength by neutral hydrogen (H I) in the intervening intergalactic…
The visibility of Lyman α emitters during reionization
We present the first Lyman α emitter (LAE) study that combines: (i) cosmological smoothed particle hydrodynamic (SPH) simulations run using GADGET-2, (ii) radiative transfer simulations (CRASH) and…
The Detectability of High-Redshift Lyα Emission Lines prior to the Reionization of the Universe
For a source of Lyα radiation embedded in a neutral intergalactic medium (IGM) prior to the reionization epoch, the Lyα emission line is strongly suppressed by the intervening IGM. The damping wing…
On the Detectability of Lyman-alpha Emission in Star-forming Galaxies: The Role of Dust
Context: Lyman-alpha (Lyα) radiation is now widely used to investigate the galaxy formation and evolution in the high redshift universe. However, without a rigorous understanding of the processes…
Intergalactic Transmission and Its Impact on the Lyα Line
We study the intergalactic transmission of radiation in the vicinity of the Ly{\alpha} wavelength. Simulating sightlines through the intergalactic medium (IGM) in detailed cosmological…
...
...