The nature of H I absorbers in gamma-ray burst afterglows: clues from hydrodynamic simulations

@article{Pontzen2010TheNO,
  title={The nature of H I absorbers in gamma-ray burst afterglows: clues from hydrodynamic simulations},
  author={Andrew Pontzen and Alis J. Deason and Fabio Governato and Max Pettini and James Wadsley and Thomas R. Quinn and Alyson M. Brooks and Jillian M. Bellovary and Johan P. U. Fynbo},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2010},
  volume={402},
  pages={1523-1535}
}
In recent work, we have shown that it is possible to link quantitatively many aspects of damped Lyman α (DLA) absorbers in the spectra of quasars to high-resolution simulations of galaxy formation. Using runs from the same series of hydrodynamic numerical studies, we consider the expected properties of intrinsic Lyman α absorbers seen in the spectra of high-redshift (z > 2) gamma-ray burst afterglows (GRB–DLAs). If GRBs are associated with the death of massive stars, their afterglows provide… Expand

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References

SHOWING 1-10 OF 72 REFERENCES
HI column densities of z > 2 Swift gamma-ray bursts
Context: .Before the launch of the Swift satellite, the majority of the gamma-ray burst (GRB) afterglows for which Lyalpha was redshifted into the observable spectrum showed evidence for a dampedExpand
Dissecting the circumstellar environment of γ-ray burst progenitors
We investigate properties of the interstellar medium (ISM) in galaxies hosting long-duration γ-ray bursts (GRBs) from an analysis of atomic species (Mg0, Fe0) and excited fine-structure levels ofExpand
A new constraint on the escape fraction in distant galaxies using γ-ray burst afterglow spectroscopy
We describe a new method to measure the escape fraction fesc of ionizing radiation from distant star-forming galaxies using the afterglow spectra of long-duration -ray bursts (GRBs). Optical spectraExpand
Physical conditions in high-redshift GRB-DLA absorbers observed with VLT/UVES: implications for molecular hydrogen searches
Aims. We aim to understand the nature of the absorbing neutral gas in the galaxies hosting high-redshift long-duration gamma-ray bursts (GRBs) and to determine their physical conditions. Methods. AExpand
Damped Lyman α systems in high‐resolution hydrodynamical simulations
We investigate the properties of damped Lyman α systems (DLAs) using high-resolution and large box-size cosmological hydrodynamical simulations of a A cold dark matter model. The numerical code usedExpand
Probing cosmic chemical evolution with gamma-ray bursts: GRB 060206 at z = 4.048
TLDR
Early optical spectroscopy of the afterglow of the gamma-ray burst GRB 060206 is presented, determining the metallicity of the GRB absorber and the physical conditions in the circumburst medium to show the distribution of metallicities for representative star-forming galaxies at these redshifts. Expand
Reconciling the Metallicity Distributions of Gamma-Ray Burst, Damped Lyα, and Lyman Break Galaxies at z ≈ 3
We test the hypothesis that the host galaxies of long-duration gamma-ray bursts (GRBs) as well as quasar-selected damped Lyα (DLA) systems are drawn from the population of UV-selected star-forming,Expand
The host galaxies of long-duration gamma-ray bursts in a cosmological hierarchical scenario
We developed a Monte Carlo code to generate long-duration gamma-ray burst (LGRB) events within cosmological hydrodynamical simulations consistent with the concordance Λ cold dark matter model. AsExpand
Probing the Interstellar Medium near Star-forming Regions with Gamma-Ray Burst Afterglow Spectroscopy: Gas, Metals, and Dust
We study the chemical abundances of the interstellar medium surrounding high-z gamma-ray bursts (GRBs) through analysis of the damped Lyα systems (DLAs) identified in afterglow spectra. These GRBExpand
Missing Molecular Hydrogen and the Physical Conditions of GRB Host Galaxies
We examine the abundance of molecular hydrogen (H2) in the spectra of gamma ray burst afterglows (GRBs). In nearby galaxies, H2 traces the cold neutral medium (CNM) and dense molecular star-formingExpand
...
1
2
3
4
5
...