MORPHOLOGICAL EVOLUTION OF A THREE-DIMENSIONAL CORONAL MASS EJECTION CLOUD RECONSTRUCTED FROM THREE VIEWPOINTS

The propagation properties of coronal mass ejections (CMEs) are crucial to predict its geomagnetic effect. The CME's 3D localization, real shape, and morphological evolution are presented. Due to its interaction with the ambient solar wind, the morphology of this CME changed significantly in th...

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Bibliographic Details
Published in:The Astrophysical journal 2012-05, Vol.751 (1), p.1-12
Main Authors: FENG, L, INHESTER, B, WEI, Y, GAN, W. Q, ZHANG, T. L, WANG, M. Y
Format: Article
Language:English
Subjects:
ASTRONOMY
ASTROPHYSICS
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
Clouds
Coronal mass ejection
Earth, ocean, space
Evolution
Exact sciences and technology
FILAMENTS
INTERPLANETARY SPACE
Localization
MASS
ORIENTATION
Position (location)
REMOTE SENSING
SOLAR CORONA
SOLAR WIND
STAR EVOLUTION
SUN
Three dimensional
THREE-DIMENSIONAL CALCULATIONS
Venus
VENUS PLANET
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Summary:The propagation properties of coronal mass ejections (CMEs) are crucial to predict its geomagnetic effect. The CME's 3D localization, real shape, and morphological evolution are presented. Due to its interaction with the ambient solar wind, the morphology of this CME changed significantly in the early phase of evolution. Two hours after its initiation, it was expanding almost self-similarly. The CME's 3D localization is quite helpful to link remote sensing observations to in situ measurements. The investigated CME was propagating to Venus with its flank just touching STEREO B. Its corresponding interplanetary CME in the interplanetary space shows a possible signature of a magnetic cloud with a preceding shock in Venus Express (VEX) observations, while from STEREO B only a shock is observed. A southward deflection of the CME from the source region is found from the trajectory of the CME geometric center. We attribute it to the influence of the coronal hole where the fast solar wind emanated from.
ISSN:0004-637X
1538-4357
DOI:10.1088/0004-637X/751/1/18