The identification and investigation of gamma-ray burst progenitors: A spectropolarimetric survey of Wolf-Rayet stars in the milky way and M33

George G Williams, Paul Smith, Gary Schmidt, Luc Dessart

Research output: Chapter in Book/Report/Conference proceedingConference contribution


There is now irrefutable observational evidence that long duration gamma-ray bursts (GRBs) are linked to Type Ic core collapse supernovae (SNe Ic). This association has resulted in a wide acceptance of the collapsar model to explain the origin of GRBs. The collapsar model requires three physical characteristics: 1.) a massive core, 2.) a hydrogen free stripped envelope, and 3.) rapid rotation. These three characteristics are present in a rapidly rotating Wolf-Rayet (WR) star.

Original languageEnglish (US)
Title of host publicationAIP Conference Proceedings
Number of pages11
Publication statusPublished - 2012
EventStellar Polarimetry: From Birth to Death - Madison, WI, United States
Duration: Jun 27 2011Jun 30 2011


OtherStellar Polarimetry: From Birth to Death
CountryUnited States
CityMadison, WI



  • gamma-ray bursts
  • spectropolarimetry
  • stellar rotation
  • Wolf-Rayet stars

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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