- Long GRBs from Binary Stars: Runaway, Wolf-Rayet Progenitors
- Book/source title
- Unsolved Problems in Stellar Physics: A Conference in Honor of Douglas Gough
- Pages (from-to)
- Volume (Publisher)
- Document type
- Conference contribution
- Faculty of Science (FNWI)
- Anton Pannekoek Institute for Astronomy (API)
The collapsar model for long gamma-ray bursts requires a rapidly rotating Wolf-Rayet star as progenitor. We test the idea of producing rapidly rotating Wolf-Rayet stars in massive close binaries through mass accretion and consecutive quasi-chemically homogeneous evolution - the latter had previously been shown to provide collapsars below a certain metallicity threshold for single stars. The binary channel presented here may provide a means for massive stars to obtain the high rotation rates required to evolve quasi-chemically homogeneous and fulfil the collapsar scenario. Moreover, it suggests that a possibly large fraction of long gamma-ray bursts occurs in runaway stars.
- DOI: 10.1063/1.2819002; eprintid: arXiv:0709.0829
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