A Gamma-Ray Burst Model with Small Baryon Contamination

  title={A Gamma-Ray Burst Model with Small Baryon Contamination},
  author={Mario Vietri and Luigi Stella},
  journal={The Astrophysical Journal Letters},
  pages={L45 - L48}
We present a scenario ("supranova") for the formation of gamma-ray bursts (GRBs) occurring when a supramassive neutron star (SMNS) loses so much angular momentum that centrifugal support against self-gravity becomes impossible, and the star implodes to a black hole. This may be the most baryon-clean environment proposed so far, because the SN explosion in which the SMNS forms sweeps the medium surrounding the remnant, and the quickly spinning remnant loses energy through magnetic dipole… 
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