Abstract


  IDENTIFICATION OF THE VORTEX MOTION IN THE SOLAR ATMOSPHERE

  V. Fedun, The University of Sheffield, v.fedun@sheffield.ac.uk
  I. Giagkiozis, The University of Sheffield, i.giagkiozis@sheffield.ac.uk
  O. Onishchenko, Space Research Institute, Institute of Physics of the Earth, Moscow, Russia, onish@ifz.ru
  O. Pokhotelov, Institute of Physics of the Earth, Moscow, Russia, pokh@ifz.ru
  G. Verth, The University of Sheffield, g.verth@sheffield,ac.uk

Vortices in the solar atmosphere present an ideal driving mechanism for Alfvenic waves that can efficiently carry energy in the upper layers of the chromosphere and corona. However, their theoretical interpretation, observational identification and classification is a challenging task. In this work we theoretically investigate the new type of large-scale vortex structures of dispersionless Alfven waves. It is shown that Alfven waves can propagate in the form of Alfven vortices of finite characteristic radius and characterised by magnetic flux ropes carrying orbital angular momentum.
Also, we leverage a number of methods conventionally employed in turbulence to identify for the first time in the solar atmosphere vortices, in an automated fashion. We present an initial statistical analysis of the properties of the identified motions and relate this with theoretical results for such magnetic structures.