Identification of a host galaxy at redshift z = 3.42 for the gamma-ray burst of 14 December 1997
Article Abstract:
Follow-up studies of the optical transient (OT) of a relatively bright gamma-ray burst, GRB971214, indicate that, as the OT faded away, there was an extended object with a red-band magnitude R = 25.6 plus or minus 0.15 at the position of the OT. It is suggested that this is the host galaxy of GRB971214. Spectroscopic observations indicate that the host is a typical star-forming galaxy at a redshift z = 3.418. GRB971214 was not a particularly faint event, and therefore statistically many fainter events can be expected to arise from larger redshifts.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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The optical counterpart to the gamma-ray burst GRB70508
Article Abstract:
A major problem in modern astrophysics is understanding the complexity of the gamma-ray burst phenomenon. Research has identified gamma-ray burst GRB970508 at optical wavelengths. A variable optical source has been identified that is the counterpart to GRB970508. The decline of the light source's luminosity is consistent with many relativistic fireball models for gamma-ray bursts.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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Spectral constraints on the redshift of the optical counterparts to the gamma-ray burst of 8 May 1997
Article Abstract:
The origin of the daily bursts of brief, intense gamma-ray bursts from random directions in space is unknown and the location of such bursts has remained a mystery. Spectroscopic observations show the distance of the source lying at a redshift of between 0.835 and 2.3, suggesting that some highly energetic gamma-ray bursts lie at cosmological distances.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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