2011

Short GRBs with Extended Emission from Magnetar Birth: Jet Formation and Collimation

Bucciantini, N., Metzger, B. D., Thompson, T. A. et al.

Understand

Approximately 1/4-1/2 of short duration Gamma-Ray Bursts are followed by variable X-ray emission lasting ~ 100 s with a fluence comparable or exceeding that of the initial burst itself.

  • The long duration and significant energy of this `extended emission'(EE) poses a major challenge to the standard binary neutron star merger model.
  • metzger08 recently proposed that the EE is powered by the spin-down of a strongly magnetized neutron star.
  • However, the effects of surrounding material on the magnetar outflow have not yet been considered.

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