Astronomy and Astrophysics – Astronomy
Scientific paper
May 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999arep...43..284e&link_type=abstract
Astronomy Reports, Volume 43, Issue 5, May 1999, pp.284-287
Astronomy and Astrophysics
Astronomy
5
Scientific paper
New arguments are presented in favor of the hypothesis that three giant stellar arcs and the LMC4 supershell in the Large Magellanic Cloud (LMC) are relicts of gamma-ray bursts (GRBs), whose progenitors escaped from the nearby old, rich star cluster NGC 1978. This may also be true of the binary X-ray sources concentrated in this same area and the object SNR N49-SGR 0526-66, located 18' from the cluster. All these objects may be genetically related to each other and to objects such as SN 1998bw-GRB 980425. The occurrence of five GRBs in the LMC over the last ~50 Myr is quite plausible. The rate of GRBs may be high, and they may be triggers for the formation of many HI supershells and regions of active star formation.
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