Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001apj...562l..63z&link_type=abstract
The Astrophysical Journal, Volume 562, Issue 1, pp. L63-L66.
Astronomy and Astrophysics
Astronomy
76
Acceleration Of Particles, Magnetic Fields, Plasmas, Stars: Pulsars: Individual: Name: Crab Nebula, Relativity, Stars: Winds, Outflows
Scientific paper
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 Alfvén 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.
Hoshino Masahiro
Zenitani Seiji
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