A white-light /Fe X/H-alpha coronal transient observation to 10 solar radii

Details A white-light /Fe X/H-alpha coronal transient observation to 10 solar radii A white-light /Fe X/H-alpha coronal transient observation to 10 solar radii

Feb 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983soph...83..153w&link_type=abstract

Solar Physics, vol. 83, Feb. 1983, p. 153-166.

Physics

12

Emission Spectra, H Alpha Line, Particle Acceleration, Solar Corona, Solar Prominences, Coronal Loops, Data Correlation, Electron Scattering, Solar Electrons, Solar Maximum Mission

Scientific paper

Multitelescope observations of the coronal transient of April 15-16, 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 Fe X 6374 A (but not in Fe XIV 5303 A). 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 solar radii, with an extrapolated start time at zero height coincident with the surface activity. This loop transient exemplifies those seen above 1.7 solar radii, in that leading the disturbance is a bright N(e)-enhanced) loop rather than a dark one. 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.

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