2009

Are all short-hard gamma-ray bursts produced from mergers of compact stellar objects?

Virgili, Francisco J., Zhang, Bing, O'Brien, Paul et al.

Understand

The origin and progenitors of short-hard gamma-ray bursts remain a puzzle and a highly debated topic.

  • Recent Swift observations suggest that these GRBs may be related to catastrophic explosions in degenerate compact stars, denoted as "Type I" GRBs.
  • The most popular models include the merger of two compact stellar objects (NS-NS or NS-BH).
  • We utilize a Monte Carlo approach to determine whether a merger progenitor model can self-consistently account for all the observations of short-hard GRBs, including a sample with redshift measurements in the Swift era (z-known sample) and the CGRO/BATSE sample.

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