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Reconstruction of magnetic clouds from in-situ spacecraft measurements and intercomparison with their solar sources

Published online by Cambridge University Press:  06 January 2014

Qiang Hu  and
Jiong Qiu
Qiang Hu
Affiliation:
Dept. of Space Science/CSPAR, University of Alabama in Huntsville, Huntsville, AL 35805, USA email: [email protected]
Jiong Qiu
Affiliation:
Physics Department, Montana State University, Bozeman, MT 59717-3840, USA email: [email protected]
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Abstract

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Coronal Mass Ejections (CMEs) are eruptive events that originate, propagate away from the Sun, and carry along solar material with embedded solar magnetic field. Some are accompanied by prominence eruptions. A subset of the interplanetary counterparts of CMEs (ICMEs), so-called Magnetic Clouds (MCs) can be characterized by magnetic flux-rope structures. We apply the Grad-Shafranov (GS) reconstruction technique to examine the configuration of MCs and to derive relevant physical quantities, such as magnetic flux content, relative magnetic helicity, and the field-line twist, etc. Both observational analyses of solar source region characteristics including flaring and associated magnetic reconnection process, and the corresponding MC structures were carried out. We summarize the main properties of selected events with and without associated prominence eruptions. In particular, we show the field-line twist distribution and the intercomparison of magnetic flux for these flux-rope structures.

Keywords

Magnetic CloudsMagnetic Flux RopeCME/ICMEIn Situ MeasurementsProminence
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S300: Nature of Prominences and their role in Space Weather , June 2013 , pp. 269 - 272
Copyright
Copyright © International Astronomical Union 2013 

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