Cosmic-ray driven dynamo in galactic disks

  title={Cosmic-ray driven dynamo in galactic disks},
  author={Michał Hanasz and Katarzyna Otmianowska-Mazur and Harald Lesch and Grzegorz Kowal and Marian Soida and Dominik W'olta'nski and Kacper Kowalik and Rafal Pawlaszek and Bulgaria Centre for Astronomy and Nicolaus Copernicus University and Astronomical Observatory and Jagiellonian University and Munich University and Department of Engineering Physics and Astronomy and McMaster University},
  journal={Proceedings of the International Astronomical Union},
  pages={479 - 484}
Abstract We present new developments on the Cosmic–Ray driven, galactic dynamo, modeled by means of direct, resistive CR–MHD simulations, performed with ZEUS and PIERNIK codes. The dynamo action, leading to the amplification of large–scale galactic magnetic fields on galactic rotation timescales, appears as a result of galactic differential rotation, buoyancy of the cosmic ray component and resistive dissipation of small–scale turbulent magnetic fields. Our new results include demonstration of… Expand
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