Testing magnetic helicity conservation in a solar-like active event

@article{Pariat2015TestingMH,
  title={Testing magnetic helicity conservation in a solar-like active event},
  author={Etienne Pariat and Gherardo Valori and Pascal D'emoulin and K{\'e}vin Dalmasse},
  journal={arXiv: Solar and Stellar Astrophysics},
  year={2015}
}
Magnetic helicity has the remarkable property of being a conserved quantity of ideal magnetohydrodynamics (MHD). Therefore, it could be used as an effective tracer of the magnetic field evolution of magnetized plasmas. Theoretical estimations indicate that magnetic helicity is also essentially conserved with non-ideal MHD processes, e.g. magnetic reconnection. This conjecture has however been barely tested, either experimentally or numerically. Thanks to recent advances in magnetic helicity… 

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