The Redshift of GRB 970508

@article{Reichart1998TheRO,
  title={The Redshift of GRB 970508},
  author={Daniel E. Reichart},
  journal={The Astrophysical Journal},
  year={1998},
  volume={495}
}
  • D. Reichart
  • Published 1998
  • Physics
  • The Astrophysical Journal
GRB 970508 is the second gamma-ray burst (GRB) for which an optical afterglow has been detected. It is the first GRB for which a distance scale has been determined: absorption and emission features in spectra of the optical afterglow place GRB 970508 at a redshift of z ≥ 0.835. The lack of a Lyα forest in these spectra further constrains this redshift to be less than z~2.3. I show that the spectrum of the optical afterglow of GRB 970508, once corrected for Galactic absorption, is inconsistent… Expand
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References

SHOWING 1-10 OF 18 REFERENCES
Observations and Theoretical Implications of GRB 970228
GRB 970228 is the first gamma-ray burst (GRB) for which prolonged postburst transient X-ray, optical, and infrared emission has been detected. Recent Hubble Space Telescope (HST) observations showExpand
Spectral constraints on the redshift of the optical counterpart to the γ-ray burst of 8 May 1997
Brief, intense bursts of γ-rays occur approximately daily from random directions in space, but their origin has remained unknown since their initial detection almost 25 years ago. Arguments based onExpand
The optical counterpart to γ-ray burst GRB970228 observed using the Hubble Space Telescope
Although more than 2,000 astronomical γ-ray bursts (GRBs) have been detected, and numerous models proposed to explain their occurrence1, they have remained enigmatic owing to the lack of an obviousExpand
Persistent Counterparts to Gamma-Ray Bursts
The recent discovery of persistent gamma-ray burst (GRB) counterparts at lower frequencies permits several important conclusions to be drawn. The spectrum of GRB 970508 is not consistent with anExpand
Shocked by GRB 970228: the afterglow of a cosmological fireball
The location accuracy of the BeppoSAX Wide Field Cameras and acute ground-based follow-up have led to the detection of a decaying afterglow in X-rays and optical light following the classicalExpand
The Soft X-Ray Afterglow of Gamma-Ray Bursts, A Stringent Test for the Fireball Model
I consider the recent discovery of a soft X-ray source inside the error box of the gamma-ray burst GB 960720 by the SAX, ASCA, and ROSAT satellites, in terms of the fireball model. I show that theExpand
Hydrodynamics of Gamma-Ray Burst Afterglow
The detection of delayed emission at X-ray optical and radio wavelengths (afterglow) following gamma-ray bursts (GRBs) suggests that the relativistic shell that emitted the initial GRB as the resultExpand
TWO POPULATIONS AND MODELS OF GAMMA-RAY BURSTS
ABSTRACT /7: Gamma-ray burst statistics are best explained by a source population at cosmological distances, while spec-troscopy and intensity histories of some individual bursts imply an origin onExpand
Radio Transients from Gamma-Ray Bursters
The rapid time variability of gamma-ray bursts implies the sources are very compact, and the peak luminosities are so high that some matter must be ejected at ultra-relativistic speeds. The veryExpand
Ultraviolet photometry from the Orbiting Astronomical Observatory. II Interstellar extinction.
Evaluation of interstellar extinction curves over the region from 3600 to 1100 A for 17 stars. The observations were made by the two Wisconsin spectrometers on board the Orbiting AstronomicalExpand
...
1
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