SLOWLY MOVING DISTURBANCES IN THE X-RAY CORONA

Sequences of soft X-ray pictures, taken aboard Skylab between May and November, 1973, have made it possible to detect slowly moving disturbances originating in disrupted filaments and causing subsequent brightenings of distant coronal structures. With speeds decreasing from ∼400 km s-1 shortly after the filament disruption to ∼10 km s-1 four or five hours later, these disturbances appear to be identical with slow waves earlier inferred by Bruzek, Öhman, and Yajima from chromospheric observations. © 1979 D. Reidel Publishing Co.