Magnetic Relaxation and Particle Acceleration in a Flaring Twisted Coronal Loop

Details Magnetic Relaxation and Particle Acceleration in a Flaring Twisted Coronal Loop Magnetic Relaxation and Particle Acceleration in a Flaring Twisted Coronal Loop

Apr 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012soph..277..299g&link_type=abstract

Solar Physics, Volume 277, Issue 2, pp.299-316

Physics

Energetic Particles, Acceleration, Flares, Energetic Particles, Magnetic Reconnection, Theory

Scientific paper

In the present work we aim to study particle acceleration in twisted coronal loops. For this purpose, an MHD model of magnetic reconnection in a linearly unstable twisted magnetic fluxtube is considered. Further, the electric and magnetic fields obtained in the MHD simulations are used to calculate proton and electron trajectories in the guiding-centre approximation. It is shown that particle acceleration in such a model is distributed rather uniformly along the coronal loop and the high-energy population remains generally neutral. It also follows from the model that the horizontal cross-section of the volume occupied by high-energy particles near the loop footpoints increases with time, which can be used as an observational proxy.

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