Models of Long Gamma-Ray Burst Progenitors

Details Models of Long Gamma-Ray Burst Progenitors Models of Long Gamma-Ray Burst Progenitors

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1279...69y&link_type=abstract

DECIPHERING THE ANCIENT UNIVERSE WITH GAMMA-RAY BURSTS. AIP Conference Proceedings, Volume 1279, pp. 69-76 (2010).

Astronomy and Astrophysics

Astronomy

Gamma-Ray Sources (Astronomical), Stellar Mass, Stellar Magnetism, Supernovae, Gamma-Ray Sources, Gamma-Ray Bursts, Masses, Magnetic And Electric Fields, Polarization Of Starlight, Supernovae

Scientific paper

We briefly review the current status of massive star evolution models including the effects of rotation and magnetic fields, and discuss possible evolutionary paths of massive stars towards long gamma-ray bursts. We also discuss the evolution of the first stars with rotation, and argue that the so-called chemically homogeneous evolution channel is most relevant for GRBs from the first generations of stars in the early universe. Our preliminary result indicates that PopIII GRB progenitors should have initial masses of about 20-60 Msolar and that super-collapsar from very massive stars (>~250 Msolar) is not likely to occur.

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