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On Expansion of Magnetic Clouds in the Solar Wind : Volume 5, Issue 1 (06/08/2009)

By Vandas, M.

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Book Id: WPLBN0003992208
Format Type: PDF Article :
File Size: Pages 4
Reproduction Date: 2015

Title: On Expansion of Magnetic Clouds in the Solar Wind : Volume 5, Issue 1 (06/08/2009)  
Author: Vandas, M.
Volume: Vol. 5, Issue 1
Language: English
Subject: Science, Astrophysics, Space
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany


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Vandas, M., Romashets, E., & Geranios, A. (2009). On Expansion of Magnetic Clouds in the Solar Wind : Volume 5, Issue 1 (06/08/2009). Retrieved from

Description: Astronomical Institute, Academy of Sciences of the Czech Republic, 14131 Praha 4, Czech Republic. Magnetic clouds are supposed to be large interplanetary flux ropes propagating away from the Sun. Due to enhanced inner magnetic pressure, they expand during their travel. We have analyzed 21 magnetic clouds from Wind observations and fitted them by our model. Comparison of the time-dependent model with observations is shown for several cases with a detailed discussion. The model describes behavior of compared quantities satisfactorily. In addition to magnetic field vectors, also velocity vectors were modeled and it was found that radial velocity component behaves as expected. Analysis of velocity components put models under a more strict test and yields more confidence into models and derived magnetic cloud parameters.

On expansion of magnetic clouds in the solar wind

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