Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-02-13
Astronomy and Astrophysics
Astrophysics
36 pages, 6 figures
Scientific paper
Although there is strong support for the collapsar engine as the power source of long-duration gamma-ray bursts (GRBs), we still do not definitively know the progenitor of these explosions. Here we review the current set of progenitor scenarios for long-duration GRBs and the observational constraints on these scenarios. Examining these, we find that single-star models cannot be the only progenitor for long-duration GRBs. Several binary progenitors can match the solid observational constraints and also have the potential to match the trends we are currently seeing in the observations. Type Ib/c supernovae are also likely to be produced primarily in binaries; we discuss the relationship between the progenitors of these explosions and those of the long-duration GRBs.
Berger Edmond
Cappellaro Enrico
Chevalier Roger
den Heuvel Edward P. J. van
Fryer Chris L.
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