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Constraints on Type Ib/c and GRB Progenitors

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arxiv astro-ph/0702338 v1 pith:4O5N6ZU2 submitted 2007-02-13 astro-ph

C.L. Fryer , P.A. Mazzali , J. Prochaska , E. Cappellaro , A. Panaitescu , E. Berger , M. van Putten , E.P.J. van den Heuvel
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P. Young A. Hungerford G. Rockefeller S.-C. Yoon P. Podsiadlowski K. Nomoto R. Chevalier B. Schmidt S. Kulkarni
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keywords grbslong-durationconstraintsprogenitorprogenitorsexplosionsmatchobservational
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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.

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Cited by 1 Pith paper

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