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The Relation between EIT Waves and Coronal Mass Ejections

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arxiv 0905.3272 v1 pith:W4QZ5FIF submitted 2009-05-20 astro-ph.SR

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keywords wavesleadingloopscoronalcavityco-spatialdimmingsejections
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More and more evidence indicates that "EIT waves" are strongly related to coronal mass ejections (CMEs). However, it is still not clear how the two phenomena are related to each other. We investigate a CME event on 1997 September 9, which was well observed by both EUV imaging telescope (EIT) and the high-cadence MK3 coronagraph at Mauna Loa Solar Observatory, and compare the spatial relation between the "EIT wave" fronts and the CME leading loops. It is found that "EIT wave" fronts are co-spatial with the CME leading loops, and the expanding EUV dimmings are co-spatial with the CME cavity. It is also found that the CME stopped near the boundary of a coronal hole, a feature common to observations of "EIT waves". It is suggested that "EIT waves"/dimmings are the EUV counterparts of the CME leading loop/cavity, based on which we propose that, as in the case of "EIT waves", CME leading loops are apparently-moving density enhancements that are generated by successive stretching (or opening-up) of magnetic loops.

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Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Multi-Instrument Observations and Tracking of a Coronal Mass Ejection Front From Low to Middle Corona

    astro-ph.SR 2025-08 conditional novelty 6.0 of 10

    A single CME observed in sequence by AIA, K-Cor, and LASCO shows the same dome-shaped front in EUV and white light, identified as a pile-up compression region behind a not-yet-detached wave.

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