A white-light/Fe X/Hα coronal transient observation to 10 solar RadII
✍ Scribed by W. J. Wagner; R. M. E. Illing; C. B. Sawyer; L. L. House; N. R. Sheeley; R. A. Howard; M. J. Koomen; D. J. Michels; R. N. Smartt; M. Dryer
- Book ID
- 104642223
- Publisher
- Springer
- Year
- 1983
- Tongue
- English
- Weight
- 901 KB
- Volume
- 83
- Category
- Article
- ISSN
- 0038-0938
No coin nor oath required. For personal study only.
✦ Synopsis
Multi-telescope observations of the coronal transient of 15-16 April, 1980 provide simultaneous data from the Solar Maximum Mission Coronagraph/Polarimeter, the Solwind Coronagraph, and the new Emission Line Coronagraph of the Sacramento Peak Observatory. An eruptive prominence-associated white light transient is for the first time seen as an unusual wave or brightening in Fex 2 6374 (but not in Fex~v )~ 5303). Several interpretations of this fleeting enhancement are offered.
The prominence shows a slowly increasing acceleration which peaks at the time of the Fe event. The white light loop transient surrounding the prominence expands at a well-documented constant speed to 10Re, with an extrapolated start time at zero height coincident with the surface activity.
This loop transient exemplifies those seen above 1.7Re in that leading the disturbance is a bright (N~-enhanced) loop rather than dark. This is consistent with a report of the behavior of another eruptive event observed by Fisher and Poland (1981) which began as a density depletion in the lower corona, with a bright loop forming at greater altitudes. The top of the bright loop ultimately fades in the outer corona while slow radial growth continues in the legs.