Computer Science
Scientific paper
Mar 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994natur.368..125k&link_type=abstract
Nature, Volume 368, Issue 6467, pp. 125-127 (1994).
Computer Science
127
Scientific paper
ONLY two different types of γ-ray transient sources are presently known: over one thousand γ-ray bursters (GRBs) and only three soft γ-ray repeaters (SGRs). The latter are distinguished by their propensity for recurrent burst behaviour1-3, in contrast to the nonrepeating GRB sources. Recurrent emission from one of the repeaters, SGR1900 + 14, has been detected4 earlier by the Burst and Transient Source Experiment (BATSE) aboard the Compton Gamma-Ray Observatory. Here we report renewed burst activity from SGR1806 - 20, the most prolific of the three known SGRs. This detection of reactivation of this source has been rapidly followed by identification of an X-ray counterpart5,6, which also coincides with a compact radio source7 now identified as a plerionic (pulsar-powered) supernova remnant8. In combination, these results are leading to a convergence of ideas about the nature of SGRs, which can now be firmly identified as neutron stars. That BATSE has detected no new sources in its two and a half years of operation indicates that SGRs are rare in our Galaxy.
Briggs Michael Stephen
Fishman Gerald J.
Green David A.
Horack John M.
Kouveliotou Chryssa
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