Morphology of coronal loop interactions

Details Morphology of coronal loop interactions Morphology of coronal loop interactions

Nov 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992esasp.348..185s&link_type=abstract

In ESA, Proceedings of the First SOHO Workshop: Coronal Streamers, Coronal Loops, and Coronal and Solar Wind Composition p 185-1

Astronomy and Astrophysics

Astronomy

2

Brightness, Coronal Loops, Plasma Interactions, Solar Activity, Surges, Astronomical Photography, Coronagraphs, Morphology, Observation, Space Plasmas

Scientific paper

Localized transient brightenings appear occasionally in images of most flare coronal loop systems, as recorded in the 5303A (Fe XIV) and 6374A (Fe X) lines. Such brightenings occur apparently also in quiet coronal loop systems, but only in the lower range of energies that characterize these events. Brightenings result when two loops come into contact at some point, the enhancement typically extending partially along the loops away from the point of intersection. The observations show systematically that a brightness maximum in the cooler (6374A) line lags that of the hotter (5303A) line by about 9 minutes on average, while H alpha material appears about 9 minutes later, the sequence revealing cooling of the plasma following initial heating. Since an enhancement does not appear in the red line prior to a corresponding maximum occurring in the green line, it appears that the plasma is heated rapidly during initial coalescence. Hence, on this basis it is inferred that such events should be observable in higher temperature lines prior to a maximum appearing in the green line. H alpha material is seen to stream down to the surface from the site of interaction, but there is some evidence also of material moving up from the surface to the region of interaction. The typical morphology of these events is discussed.

Affiliated with

Also associated with

No associations

Rating

Morphology of coronal loop interactions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Morphology of coronal loop interactions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Morphology of coronal loop interactions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1552228