Three-Dimensional Polarimetric Imaging of Coronal Mass Ejections

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Science  02 Jul 2004:
Vol. 305, Issue 5680, pp. 66-70
DOI: 10.1126/science.1098937

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We present three-dimensional reconstructions of coronal mass ejections (CMEs), which were obtained through polarization analysis of single-view images recorded with the use of the Large Angle and Spectrometric Coronagraph (LASCO) C2 coronagraph on board the Solar and Heliospheric Observatory (SOHO) spacecraft. Analysis of a loop-like CME shows a complex three-dimensional structure centered at 40° from the plane of the sky, moving radially at 250 kilometers/second. Reconstruction of two halo CMEs suggests that these events are expanding loop arcades.

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