Polarization of Prompt Gamma-Ray Burst Emission: Evidence for Electromagnetically Dominated Outflow

  title={Polarization of Prompt Gamma-Ray Burst Emission: Evidence for Electromagnetically Dominated Outflow},
  author={M. Lyutikov and V. Pariev and Roger Blandford McGill University Cita and University of Rochester Lebedev Physical Institute and California Institute of Technology.},
  journal={The Astrophysical Journal},
  • M. Lyutikov, V. Pariev, +2 authors California Institute of Technology.
  • Published 2003
  • Physics
  • The Astrophysical Journal
  • Observations by the RHESSI satellite of the large polarization of the prompt γ-ray emission from γ-ray burst (GRB) 021206 imply that the magnetic field coherence scale is larger than the size of the visible emitting region, ~R/Γ, where R is the radius of the flow and Γ is the associated Lorentz factor. Such fields cannot be generated in a causally disconnected, hydrodynamically dominated outflow. Electromagnetic models of GRBs, in which large-scale, dynamically dominant, magnetic fields are… CONTINUE READING
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