Imaging Coronal Mass Ejections in the Heliosphere using the STEREO Heliospheric Imagers

Details Imaging Coronal Mass Ejections in the Heliosphere using the STEREO Heliospheric Imagers Imaging Coronal Mass Ejections in the Heliosphere using the STEREO Heliospheric Imagers

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsh42a..05h&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #SH42A-05

Physics

2101 Coronal Mass Ejections (7513), 2111 Ejecta, Driver Gases, And Magnetic Clouds, 2194 Instruments And Techniques

Scientific paper

We present images of Coronal Mass Ejections in the heliosphere, tracked from the outer corona to Earth-like distances, from the first months of the scientific operation of the Heliospheric Imagers (HI) aboard the NASA STEREO spacecraft. The HI instruments are wide-angle imaging systems designed to detect CMEs in the heliosphere, in particular, for the first time, observing the propagation of such events along the Sun-Earth line. These early results show that despite severe technical challenges in their design and implementation, the HI instruments can successfully detect CMEs in the heliosphere and this is an extremely important milestone for CME research. Among the early results, we show a number of CME events, demonstrating the ability to extract the F-coronal intensity distribution, and to track a CME from the corona to the Earth. Early investigations of the velocity profiles of CMEs as they propagate through the heliosphere and of their basic structure will be presented.

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