Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006head....9.1319n&link_type=abstract
American Astronomical Society, HEAD meeting #9, #13.19; Bulletin of the American Astronomical Society, Vol. 38, p.369
Astronomy and Astrophysics
Astronomy
Scientific paper
Particle acceleration via Poynting vector with toroidal magnetic field is studied in 3D PIC simulation of electron-positron plasma. We choose two different initial magnetic field configurations to compare how the particle acceleration is affected by the expansion of electromagnetic wave. In the cylindrical case, the electromagnetic field strength decays as ct-2, and particles are accelerated in the radial direction as well as the axial direction. Rayleigh-Taylor instability is also observed at the center of the cylinder. In the torus case, the field strength decays as ct-3, making the acceleration less efficient. Particles accelerated in the axial direction by ExB force creates strong charge separation. We will discuss the relation between the model and the acceleration of particles in the magnetic tower jet from accretion disks, and the radiation profile from particles.
Liang Edison
Noguchi Koichi
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