FRB coherent emission from decay of Alfvén waves

  title={FRB coherent emission from decay of Alfv{\'e}n waves},
  author={Pawan Kumar and Ž. Bo{\vs}njak},
  journal={Monthly Notices of the Royal Astronomical Society},
We present a model for FRBs where a large amplitude Alfven wave packet is launched by a disturbance near the surface of a magnetar, and a substantial fraction of the wave energy is converted to coherent radio waves at a distance of a few tens of neutron star radii. The wave amplitude at the magnetar surface should be about 1011G in order to produce a FRB of isotropic luminosity 10$^{44}$ erg s$^{-1}$. An electric current along the static magnetic field is required by Alfven waves with nonzero… 

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