A note on the Weibel instability and thermal fluctuations


The thermal fluctuation level of the Weibel instability is recalculated. It is shown that the divergence of the fluctuations at long wavelengths, i.e.\ the Weibel infrared catastrophe, never occurs. At large wavelengths the thermal fluctuation level is terminated by the presence of even the smallest available stable thermal anisotropy. Weibel fields penetrate only one skin depth into the plasma. When excited inside, they cause layers of antiparallel fields of skin depth width and vortices which may be subject to reconnection. \keywords{Space plasma physics (Waves and instabilities)}

Further Information
http://www.ann-geophys.net/30/427/2012/angeo-30-427-2012.html http://arxiv.org/abs/1202.5424
  author = {Treumann, R. A. and Baumjohann, W.},
  doi = {10.5194/angeo-30-427-2012},
  journal = {Annales Geophysicae},
  language = {en},
  pages = {427-431},
  title = {A note on the Weibel instability and thermal fluctuations},
  url = {http://www.ann-geophys.net/30/427/2012/angeo-30-427-2012.html
  volume = {30},
  year = {2012},
%O Journal Article
%A Treumann, R. A.
%A Baumjohann, W.
%R 10.5194/angeo-30-427-2012
%J Annales Geophysicae
%G en
%P 427-431
%T A note on the Weibel instability and thermal fluctuations
%U http://www.ann-geophys.net/30/427/2012/angeo-30-427-2012.html
%V 30
%D 2012