Heliospheric Evolution of Magnetic Clouds

  title={Heliospheric Evolution of Magnetic Clouds},
  author={Bojan Vr{\vs}nak and Tanja Amerstorfer and Mateja Dumbovi{\'c} and Markus Leitner and Astrid M. Veronig and Manuela Temmer and Christian M{\"o}stl and Ute V. Amerstorfer and Charles J. Farrugia and A. B. Galvin},
  journal={The Astrophysical Journal},
The interplanetary evolution of 11 magnetic clouds (MCs) recorded by at least two radially aligned spacecraft is studied. The in situ magnetic field measurements are fitted to a cylindrically symmetric Gold–Hoyle force-free uniform-twist flux-rope configuration. The analysis reveals that in a statistical sense, the expansion of the studied MCs is compatible with self-similar behavior. However, individual events expose a large scatter of expansion rates, ranging from very weak to very strong… 

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