Výsledky vyhledávání - "NISHIMURA, Kazumi"

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Radiative Effects on Particle Acceleration in Electromagnetic Dominated Outflows

Autor: Noguchi, Koichi, Liang, Edison, Nishimura, Kazumi

Plasma outflows from gamma-ray bursts (GRB), pulsar winds, relativistic jets, and ultra-intense laser targets radiate high energy photons. However, radiation damping is ignored in conventional PIC simulations. In this letter, we study the radiation d

Externí odkaz: http://arxiv.org/abs/astro-ph/0412310

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Repeated Bifurcation of Relativistic Magnetic Pulse and Cosmic Gamma-Ray Bursts

Autor: Liang, Edison, Nishimura, Kazumi

The diverse and complex light curves of gamma-ray bursts (GRBs) remain an outstanding astrophysical mystery. Here we report the results of 2-1/2-dimensional particle-in-cell (PIC) simulations of the relativistic expansion of magnetized electron-posit

Externí odkaz: http://arxiv.org/abs/astro-ph/0308301

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Parameter study of the diamagnetic relativistic pulse accelerator (DRPA) in slab geometry I: Dependence on initial frequency ratio and slab width

Autor: Nishimura, Kazumi, Liang, Edison

Two-and-a-half-dimensional particle-in-cell plasma simulations are used to study the particle energization in expanding magnetized electron-positron plasmas with slab geometry. When the magnetized relativistic plasma with high temperature (initial el

Externí odkaz: http://arxiv.org/abs/astro-ph/0308153

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Charge separation effects in magnetized electron-ion plasma expansion into a vacuum

Autor: Nishimura, Kazumi, Liang, Edison, Gary, S. Peter

Charge separation effects in the expansion of magnetized relativistic electron-ion plasmas into a vacuum are examined using 2-1/2-dimensional particle-in-cell plasma simulations. The electrostatic field at the plasma surface decelerates electrons and

Externí odkaz: http://arxiv.org/abs/astro-ph/0307456

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Particle Energization in an Expanding Magnetized Relativistic Plasma

Autor: Liang, Edison, Nishimura, Kazumi, Li, Hui, Gary, S. Peter

Publikováno v: Phys.Rev.Lett.90:085001,2003

Using a 2-1/2-dimensional particle-in-cell (PIC) code to simulate the relativistic expansion of a magnetized collisionless plasma into a vacuum, we report a new mechanism in which the magnetic energy is efficiently converted into the directed kinetic

Externí odkaz: http://arxiv.org/abs/astro-ph/0301330

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