The radio afterglow from the gamma-ray burst of 8 May 1997
Article Abstract:
Scientists have learned more about gamma-ray bursts (GRB) due to the opportunity to commence radio observation of a GRB on May 8 1997 only 3.7 hours after the GRB, and to the discovery of long-lasting X-ray afterglows. Scientists observed a variable radio source within the error box of GRB970508 which was coincident with the optical transient. They believe this could be the radio counterpart of a GRB. They believe that the source has an angular size of about 3 microseconds in the early weeks, but that damping of fluctuations indicates significant expansion over time.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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Observation of contemporaneous optical radiation from a gamma-ray burst
Article Abstract:
A bright optical emission from GRB990123 was detected during the burst. Optical emission from gamma-ray bursts had been thought to occur at the shock fronts where gamma-rays may also be produced. An increase in brightness by a factor of 14 in the first 25 seconds was observed, followed by a decline in brightness by a factor of 100. It is suggested that the gamma-rays are produced closer to the site of the original explosion, rather than at the shock front.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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