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Self-consistent radiative effect on relativistic electromagnetic particle acceleration

K. Noguchi·E. Liang·K. Nishimura
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Abstract

We study the radiation damping effect on the relativistic acceleration of electron-positron plasmas with two-and-half-dimensional particle-in-cell (PIC) simulation. Particles are accelerated by Poynting flux via the diamagnetic relativistic pulse accelerator (DRPA), and decelerated by the self-consistently solved radiation damping force. With $Ω_{ce}/ω_{pe}\geq 10$, the Lorentz factor of the highest energy particles reaches gamma>100, and the acceleration still continues. The emitted radiation is peaked within few degrees from the direction of Poynting flux and strongly linearly polarized, which may be detectable in gamma-ray burst(GRB) observations. We also show that the DRPA is insensitive to the initial supporting currents.

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K. Noguchi, E. Liang, K. Nishimura. 2005-04-27. Self-consistent radiative effect on relativistic electromagnetic particle acceleration. https://doi.org/10.1393/ncc%2Fi2005-10065-9

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