Mechanism for sequestering magnetic energy at large scales in shear-flow turbulence

@article{Tripathi2022MechanismFS,
  title={Mechanism for sequestering magnetic energy at large scales in shear-flow turbulence},
  author={Bindesh Tripathi and Adrian E. Fraser and Paul W. Terry and Ellen G. Zweibel and M. J. Pueschel},
  journal={Physics of Plasmas},
  year={2022}
}
Straining of magnetic fields by large-scale shear flow, which is generally assumed to lead to intensification and generation of small scales, is reexamined in light of the persistent observation of large-scale magnetic fields in astrophysics. It is shown that, in magnetohydrodynamic turbulence, unstable shear flows have the unexpected effect of sequestering magnetic energy at large scales due to counteracting straining motion of nonlinearly excited large-scale stable eigenmodes. This effect is… 

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