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Session 1 - Chromosphere, Corona, Flares.
Display session, Friday, June 27
Ballroom B, Chair: Charles Kankelborg

[1.38] Automated Identification of Soft X-ray Coronal Loops

D. Alexander (Lockheed-Martin Advanced Technology Center), T. R. Metcalf (Lockheed-Martin Advanced Technology Center)

The presence of loop-like structures in the solar corona is clearly evident in soft X-ray images such as those from the Soft X-ray Telescope on board the Yohkoh satellite. These structures were first discovered in Skylab data and are thought to represent the enhanced heating of the coronal plasma confined in magnetic fluxtubes. In many cases the heating is not confined to a single well defined fluxtube nor is it always strong enough to dilineate the structure sharply against the diffuse coronal background, which is itself presumably composed of loop structures. In these cases it is often extremely difficult to identify the structures involved in coronal activity. We have developed a technique which uses a Pixon reconstruction of the soft X-ray images to search specifically for loop-like structures. This allows us to pick out faint loops against a strong background and to identify multiple loop structures in bright regions. We are, therefore, better able to address the heating of the solar corona both in the diffuse and active regions.

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Program listing for Friday