Adding ions to a magnetized relativistic wind lets inductive acceleration push both ions and leptons to Hillas-limit energies in a shorter distance than lepton-only winds.
Efficient acceleration and radiation in Poynting flux powered GRB outflows
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abstract
We investigate the effects of magnetic energy release by local magnetic dissipation processes in Poynting flux-powered GRBs. For typical GRB parameters (energy and baryon loading) the dissipation takes place mainly outside the photosphere, producing non-thermal radiation. This process converts the total burst energy into prompt radiation at an efficiency of 10-50%. At the same time the dissipation has the effect of accelerating the flow to a large Lorentz factor. For higher baryon loading, the dissipation takes place mostly inside the photosphere, the efficiency of conversion of magnetic energy into radiation is lower, and an X-ray flash results instead of a GRB. We demonstrate these effects with numerical one-dimensional steady relativistic MHD calculations.
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astro-ph.HE 1years
2019 1verdicts
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Inductive acceleration of ions in Poynting-flux dominated outflows
Adding ions to a magnetized relativistic wind lets inductive acceleration push both ions and leptons to Hillas-limit energies in a shorter distance than lepton-only winds.