particle acceleration by relativistic expansion of magnetic arcades n.
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H. Takahashi, E. Asano, R. Matsumoto Chiba Unv. Japan. Particle Acceleration by Relativistic Expansion of Magnetic Arcades. shock. current sheet. Asano et al. (P12). Simulation Model of Particle Accelerations. 2-dim. Paritcle-In-Cell (PIC) simulation

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Particle Acceleration by Relativistic Expansion of Magnetic Arcades


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simulation model of particle accelerations
Simulation Model of Particle Accelerations

2-dim. Paritcle-In-Cell (PIC) simulation

  • Mikic Model extended into relativistic plasma
  • (NX,NY)=(200,1600)

Assumption

  • elecron-positron plasma
  • collisionless
  • Plasma density is slightly

larger than Goldreich-Julian density

Initial Model constructed by Mikic(‘88)

Bz : toroidal components

Bx,By: poloidal components

2 5 dimensional pic simulation result
2.5-dimensional PIC Simulation: Result

Tg=90.0

Tg=237.5

color: Bz

line: field line

color: density

line: field line

color: Bz

line: field line

ExB drift motion leads to charge

deficiency in the arcades.

Magnetic reconnections take place

inside the expanding arcades.