An unusual transient pulse of greater than approximately 50 keV photons was detected on March 5, 1979 by the gamma-ray burst sensor network using nine space probes and satellites. Its characteristics are unlike those of the known variety of gamma-ray bursts and therefore suggest that it was formed either by a completely different origin species or in a very different manner. In a companion Letter it is identified with the LMC supernova remnant N49.
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Cline et al. (1980) studied this question.