Centrifugal and gravitational forces both raise magnetic reconnection rates near Kerr black holes, with gravity separating charges and centrifugal force shortening the current sheet via curved geometry seen by a comoving observer.
The Generation of Nonthermal Particles in the Relativistic Magnetic Reconnection of Pair Plasmas
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abstract
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 Alfv\'{e}n 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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3D PIC simulations of relativistic turbulence show mirror interactions drive perpendicular momentum gains correlated with local magnetic-field strengthening, yielding anisotropic high-energy particle distributions and enhanced confinement.
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Magnetic reconnection under centrifugal and gravitational electromotive forces
Centrifugal and gravitational forces both raise magnetic reconnection rates near Kerr black holes, with gravity separating charges and centrifugal force shortening the current sheet via curved geometry seen by a comoving observer.
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Studying the mirror acceleration via kinetic simulations of relativistic plasma turbulence
3D PIC simulations of relativistic turbulence show mirror interactions drive perpendicular momentum gains correlated with local magnetic-field strengthening, yielding anisotropic high-energy particle distributions and enhanced confinement.