MHD turbulence, reconnection, and test-particle acceleration

1992 ◽  
Author(s):  
Perry C. Gray ◽  
William H. Matthaeus
Keyword(s):  
Particle Acceleration ◽  
Test Particle ◽  
Mhd Turbulence

scholarly journals Particle Orbits, Trapping, and Acceleration in a Filamentary Current Sheet Model

1994 ◽  
Vol 142 ◽  
pp. 719-728
Author(s):  
Bernhard Kliem
Keyword(s):  
Particle Acceleration ◽  
Electric Field ◽  
Test Particle ◽  
Solar Flares ◽  
Acceleration Of Particles ◽  
Acceleration Process ◽  
Two Dimensional ◽  
Magnetic Island ◽  
Particle Orbits ◽  
Island Dynamics

AbstractTest particle orbits in the two-dimensional Fadeev equilibrium with a perpendicular electric field added are analyzed to show that impulsive bursty reconnection, which has been proposed as a model for fragmentary energy release in solar flares, may account also for particle acceleration to (near) relativistic energies within a fraction of a second. The convective electric field connected with magnetic island dynamics can play an important role in the acceleration process.Subject headings: acceleration of particles — MHD — plasmas — Sun: corona — Sun: flares

scholarly journals Particle acceleration in three-dimensional reconnection regions: A new test particle approach

1999 ◽  
Vol 6 (11) ◽  
pp. 4318-4327 ◽  
Author(s):  
Rüdiger Schopper ◽  
Guido T. Birk ◽  
Harald Lesch
Keyword(s):  
Particle Acceleration ◽  
Test Particle ◽  
Three Dimensional ◽  
Particle Approach

TRANSPORT EQUATION FOR MHD TURBULENCE: APPLICATION TO PARTICLE ACCELERATION AT INTERPLANETARY SHOCKS

2009 ◽  
Vol 696 (1) ◽  
pp. 261-267 ◽  
Author(s):  
Igor V. Sokolov ◽  
Ilia I. Roussev ◽  
Marina Skender ◽  
Tamas I. Gombosi ◽  
Arcadi V. Usmanov
Keyword(s):  
Particle Acceleration ◽  
Transport Equation ◽  
Interplanetary Shocks ◽  
Mhd Turbulence

scholarly journals On the compressibility effect in test particle acceleration by magnetohydrodynamic turbulence

2016 ◽  
Vol 23 (8) ◽  
pp. 082305 ◽  
Author(s):  
C. A. González ◽  
P. Dmitruk ◽  
P. D. Mininni ◽  
W. H. Matthaeus
Keyword(s):  
Particle Acceleration ◽  
Test Particle ◽  
Magnetohydrodynamic Turbulence ◽  
Compressibility Effect

Test particle acceleration in a magnetotail reconnection configuration

1989 ◽  
Vol 16 (9) ◽  
pp. 1027-1030 ◽  
Author(s):  
D. Sachsenweger ◽  
M. Scholer ◽  
E. Möbius
Keyword(s):  
Particle Acceleration ◽  
Test Particle ◽  
Magnetotail Reconnection

scholarly journals Radio and X-ray diagnostics of electrons accelerated in solar flares

2006 ◽  
Vol 2 (14) ◽  
pp. 88-88
Author(s):  
Miroslav Bárta ◽  
Marian Karlický
Keyword(s):  
Particle Acceleration ◽  
Solar Flare ◽  
Test Particle ◽  
Solar Flares ◽  
Global Scale ◽  
X Ray ◽  
Particle Simulations

AbstractStarting from 2.5D MHD modelling of solar flares on a global scale we calculate (using the PIC and test-particle simulations) the radio and X-ray emissions generated in solar flare reconnection. Our results – the radio and X-ray spectra and brightness distributions, and their dynamics – are directly comparable with observations providing thus a test of particle acceleration models as well as of the ‘standard’ global flare scenario.

scholarly journals Test Particle Acceleration in Three-dimensional Magnetohydrodynamic Turbulence

2003 ◽  
Vol 597 (1) ◽  
pp. L81-L84 ◽  
Author(s):  
P. Dmitruk ◽  
W. H. Matthaeus ◽  
N. Seenu ◽  
M. R. Brown
Keyword(s):  
Particle Acceleration ◽  
Test Particle ◽  
Three Dimensional ◽  
Magnetohydrodynamic Turbulence

scholarly journals Particle Acceleration in the Heliosphere

1995 ◽  
Vol 10 ◽  
pp. 307-309
Author(s):  
Loukas Vlahos
Keyword(s):  
Particle Acceleration ◽  
Energy Dissipation ◽  
Electric Field ◽  
Solar Surface ◽  
Interplanetary Medium ◽  
Acceleration Process ◽  
Mhd Turbulence ◽  
Dissipation Process ◽  
Planetary Magnetospheres ◽  
Dissipation Processes

The heliosphere could be divided in three major acceleration Laboratories, the solar surface (Laboratory 1), the interplanetary medium (Laboratory 2) and Earth and Planetary magnetospheres (Laboratory 3). Our understanding of the acceleration process depends strongly on the nature of the drivers and the energy dissipation process. The energy gain by a particle with velocity where is the variation of the electric field in space and time. All three Laboratories mentioned above share a common characteristic, the drivers and the energy dissipation processes are closely connected to fully developed MHD turbulence. We can show that our understanding of particle acceleration depends strongly on the interaction of particles with fields resulting from fully developed MHD turbulence.

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