DISCERNING THE PHYSICAL ORIGINS OF COSMOLOGICAL GAMMA-RAY BURSTS BASED ON MULTIPLE OBSERVATIONAL CRITERIA: THE CASES OF z = 6.7 GRB 080913, z = 8.2 GRB 090423, AND SOME SHORT/HARD GRBs
@article{Zhang2009DISCERNINGTP, title={DISCERNING THE PHYSICAL ORIGINS OF COSMOLOGICAL GAMMA-RAY BURSTS BASED ON MULTIPLE OBSERVATIONAL CRITERIA: THE CASES OF z = 6.7 GRB 080913, z = 8.2 GRB 090423, AND SOME SHORT/HARD GRBs}, author={Bing Zhang and Binbin Zhang and Francisco J. Virgili and Enwei Liang and David Alexander Kann and Xuefeng Wu and D. Proga and Houjun Lv and Kenji Toma and P. M{\'e}sz{\'a}ros and David N. Burrows and Peter W. A. Roming and N. C. Gehrels}, journal={The Astrophysical Journal}, year={2009}, volume={703}, pages={1696 - 1724} }
The two high-redshift gamma-ray bursts, GRB 080913 at z = 6.7 and GRB 090423 at z = 8.2, recently detected by Swift appear as intrinsically short, hard GRBs. They could have been recognized by BATSE as short/hard GRBs should they have occurred at z ⩽ 1. In order to address their physical origin, we perform a more thorough investigation on two physically distinct types (Type I/II) of cosmological GRBs and their observational characteristics. We reiterate the definitions of Type I/II GRBs and…
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References
SHOWING 1-10 OF 348 REFERENCES
Closing in on a Short-Hard Burst Progenitor: Constraints from Early-Time Optical Imaging and Spectroscopy of a Possible Host Galaxy of GRB 050509b
- Physics
- 2005
The localization of the short-duration, hard-spectrum gamma-ray burst GRB 050509b by the Swift satellite was a watershed event. We report the discovery of the probable host galaxy, a bright…
GRB 060121: Implications of a Short-/Intermediate-Duration γ-Ray Burst at High Redshift
- Physics
- 2006
Since the discovery of the first short-population γ-ray burst (GRB) afterglows in 2005, the handful of observed events have been found to be embedded in nearby (z < 1), bright underlying galaxies. We…
GRB 090426: the environment of a rest-frame 0.35-s gamma-ray burst at a redshift of 2.609
- Physics
- 2010
We present the discovery of an absorption-line redshift of z = 2.609 for GRB 090426, establishing the first firm lower limit to a redshift for a gamma-ray burst (GRB) with an observed duration of 90…
GRB 060505: A Possible Short-Duration Gamma-Ray Burst in a Star-forming Region at a Redshift of 0.09
- Physics
- 2007
On 2006 May 5, a 4 s duration, low-energy, ~1049 erg, gamma-ray burst (GRB) was observed, spatially associated with a z = 0.0894 galaxy. Here we report the discovery of the GRB optical afterglow and…
A Putative Early-Type Host Galaxy for GRB 060502B: Implications for the Progenitors of Short-Duration Hard-Spectrum Bursts
- Physics
- 2007
Starting with the first detection of an afterglow from a short-duration hard-spectrum γ-ray burst (SHB) by Swift last year, a growing body of evidence has suggested that SHBs are associated with an…
Making a Short Gamma-Ray Burst from a Long One: Implications for the Nature of GRB 060614
- Physics
- 2007
The absence of a supernova accompanying the nearby long GRB 060614 poses a great puzzle about the progenitor of this event and challenges the current GRB classification scheme. This burst displays a…
A short γ-ray burst apparently associated with an elliptical galaxy at redshift z = 0.225
- PhysicsNature
- 2005
Gamma-ray bursts (GRBs) come in two classes: long (> 2 s), soft-spectrum bursts and short, hard events. Most progress has been made on understanding the long GRBs, which are typically observed at…
ON THE ORIGIN OF THE HIGHEST REDSHIFT GAMMA-RAY BURSTS
- Physics
- 2008
GRB 080913 and GRB 090423 are the most distant gamma-ray bursts (GRBs) known to date, with spectroscopically determined redshifts of z = 6.7 and z = 8.1, respectively. The detection of bursts at this…
VLT Spectroscopy of GRB 990510 and GRB 990712: Probing the Faint and Bright Ends of the Gamma-Ray Burst Host Galaxy Population
- Physics
- 2001
We present time-resolved optical spectroscopy of the afterglows of the gamma-ray bursts GRB 990510 and GRB 990712. Through the identification of several absorption lines in the first-epoch GRB 990510…