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Magnetic Clouds Fitted by a Constant-Alpha Force-Free Toroidal Solution
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SYSNO ASEP 0355336 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Magnetic Clouds Fitted by a Constant-Alpha Force-Free Toroidal Solution Author(s) Vandas, Marek (ASU-R) RID, ORCID
Romashets, E. P. (US)Source Title Twelfth International Solar Wind Conference. Proceedings Paper. - New York : Melville, 2010 / Maksimovic M. ; Issautier K. ; Meyer-Vernet N. ; Moncuquet M. ; Pantellini F. - ISSN 0094-243X - ISBN 978-0-7354-0759-6 Pages s. 403-407 Number of pages 5 s. Publication form Print - P Action Twelve International Solar Wind Conference Event date 21.06.2009-26.06.2009 VEvent location Saint-Malo Country FR - France Event type WRD Language eng - English Country US - United States Keywords interplanetary ; magnetic fields ; particle emission Subject RIV BL - Plasma and Gas Discharge Physics R&D Projects 1QS300120506 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) GA205/09/0170 GA ČR - Czech Science Foundation (CSF) ME09032 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z10030501 - ASU-R (2005-2011) UT WOS 000281438100095 DOI 10.1063/1.3395888 Annotation Magnetic clouds have been defined as special regions in the solar wind with higher magnetic field magnitude, lower proton temperature, and large rotation of the magnetic field vector. In some cases, the rotation exceeds 180° and it is interpreted as a signature that a magnetic cloud/flux rope is curved. It corresponds to common understanding that magnetic clouds are large interplanetary flux ropes, which have loop-like shapes in the heliosphere. In such cases, magnetic clouds are fitted by approximate linear force-free toroidal solutions (derived for large aspect ratios). Here an exact constant-alpha force-free toroidal solution is compared with approximate ones and it is found a reasonable agreement even for low aspect ratios. Workplace Astronomical Institute Contact Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Year of Publishing 2015
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