Imaging Solar Eruption Dynamics
SOHO's Coronal Diagnostic Spectrometer (CDS)
and EIT Composite Eruption Analysis (Courtesy ESA/NASA)
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The main background image is an EIT image of an eruption on 14th January 2001 and the CDS instrument was fortunate enough to capture an image of the filaments as the eruption was underway. The two CDS insets show the intensity (on the right) and the relative velocity of ejected material (on the left). The blue colour represents material coming towards the observer and red for that moving away. Gray implies low velocities below the resolution of the instrument. This velocity map appears to suggest a rotational movement in the ejected material. This shows how combined spectroscopic observations and high resolution imaging can enhance the understanding of solar events. |
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