期刊
ASTROPHYSICAL JOURNAL
卷 562, 期 1, 页码 L63-L66出版社
UNIV CHICAGO PRESS
DOI: 10.1086/337972
关键词
acceleration of particles; magnetic fields; plasmas; pulsars : individual (Crab Nebula); relativity; stars : winds, outflows
Particle acceleration in the magnetic reconnection of electron-positron plasmas is studied by using a particle-in-cell simulation. It is found that a significantly large number of nonthermal particles are generated by the inductive electric fields around an X-type neutral line when the reconnection outflow velocity, which is known to be an Alfven velocity, is on the order of the speed of light. In such a relativistic reconnection regime, we also find that electrons and positrons form a power-law-like energy distribution through their drift along the reconnection electric field under the relativistic Speiser motion. A brief discussion of the relevance of these results to the current sheet structure, which has an antiparallel magnetic field in astrophysical sources of synchrotron radiation, is presented.
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