ISOON H-alpha Survey of Sequential Chromospheric Brightenings

Balasubramaniam et al. (2005, ApJ, 630, 1160) described a new phenomenon, sequential chromospheric brightenings (SCBs), associated with eruption of a transequatorial loop and a CME. We present a detailed survey of SCBs between December 2000 - May 2005. From this survey we have identified 17 SCBs observed during this period. We discuss the relationship between SCBs, and filament eruptions, coronal mass ejections (CME), and flares. The data were drawn from ISOON, SOHO/LASCO, and NOAA/GOES, and RHESSI missions. We find that: all SCBs are accompanied by filament eruption or disappearance; SCBs are more likely to be longer in duration than associated flares; and a large fraction of the SCBs (71%) are associated with CMEs.