Journal ArticleDOI
The association of coronal mass ejection transients with other forms of solar activity
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TLDR
In this article, a strong correlation between mass ejection transients and chromospheric Hα activity was found, with three-quarters of the transients apparently originating in or near active regions.Abstract:
Coronal mass ejection transients observed with the white light coronagraph on Skylab are found to be associated with several other forms of solar activity. There is a strong correlation between such mass ejection transients and chromospheric Hα activity, with three-quarters of the transients apparently originating in or near active regions. We infer that 40% of transients are associated with flares, 50% are associated with eruptive prominences solely (without flares), and more than 70% are associated with eruptive prominences or filament disappearances (with or without flares). Nine of ten flares which displayed apparent mass ejections of Hα-emitting material from the flare site could be associated with coronal transients. Within each class of activity, the more energetic events are more likely to be associated with an observable mass ejection.read more
Citations
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The solar flare myth
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On the temporal relationship between coronal mass ejections and flares
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Coronal Mass Ejections: Models and Their Observational Basis
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Geomagnetic activity associated with earth passage of interplanetary shock disturbances and coronal mass ejections
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Coronal Mass Ejections: Observations
David F. Webb,Timothy A. Howard +1 more
TL;DR: In this paper, the authors review some key coronal properties of CMEs, their source regions and their propagation through the solar wind, and the latest developments from the STEREO and LASCO coronagraphs and the SMEI and HI heliospheric imagers.
References
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Journal ArticleDOI
Mass ejections from the Sun: A view from Skylab
TL;DR: More than 30 mass ejections from the sun were observed with the white light coronagraph experiment aboard Skylab during the first 118 days of the mission as discussed by the authors, during which they were associated with active and eruptive prominences and surges; only three ejections appear to have been flare initiated.
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The speeds of coronal mass ejection events
TL;DR: In this article, it was shown that the fastest mass ejection events are almost always associated with flares and with metric wavelength type II and IV radio bursts, which explains why major shock wave disturbances in the solar wind at 1 AU are most often associated with these forms of solar activity rather than with eruptive prominences.
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A survey of soft X-ray limb flare images: the relation between their structure in the corona and other physical parameters.
TL;DR: In this article, the morphology of limb flares is investigated and the observed spatial structure is related with the other physical parameters of the region (temperature, density, characteristic times, and energy density).
Journal ArticleDOI
The morphological and statistical properties of solar X-ray events with long decay times
TL;DR: In this paper, the morphological and statistical properties of a class of X-ray events with long decay times were analyzed based on their Solrad 1-8 A flux signatures, which are associated statistically with long-lived active regions, white-light coronal transients, and H alpha prominence activations.
Journal ArticleDOI
Coronal changes associated with a disappearing filament
N. R. Sheeley,J. D. Bohlin,Guenter E. Brueckner,J. D. Purcell,V. E. Scherrer,Richard Tousey,J. B. Smith,D. M. Speich,Einar Tandberg-Hanssen,Robert M. Wilson,A. C. De Loach,Richard B. Hoover,J. P. Mc Guire +12 more
TL;DR: In this article, Skylab/ATM observations of a disappearing filament near the center of the solar disk are described using XUV and H-alpha spectroheliograms, X-ray filterheliogram, and photospheric magnetogram.