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No. 5 Time (UT) 01:21 X-ray BP behaviour A bright region with a few bright cores and diffused structure presented. Magnetic fragment behaviour Note

A bipolar region is involved. Positive Start of the data set. fragments present at the centre of the region and negative ones scattered around. Two major negative fragments locate at both east and west sides of the positive ones. At the west, positive fragments touch the negative ones. At the east, a few small negative fragments mix with the positive ones. Cancellation occurs at both sides. The negative fragments locating at the middle of the east positive ones become very weak and small. Cancellation continues at the west .

01:32

The brightening region becomes faded.

01:45

The BP becomes A few negative fragments emerge near the stronger and positive ones at the east and move toward bigger. them. At the west, positive fragments keep moving toward the negative ones and cancellation continues. The BP reaches one peak of its light curve. Cancellation is observed at both east and west sites. Both negative and positive fragments become smaller, weaker but more concentrated.

02:11

02:28

The BP becomes Negative fragments in the east cancellation faded again. site are hardly visible. Many positive fragment at the west disappeared and the remained have a certain distance from the negative ones. The BP is visible A few negative fragments emerge at but weak. southeast and move toward the positive ones at the east. Near the west negative fragments, a few positive fragments emerge and cancellation occurs soon after. A few negative fragments from the southwest move toward the positive fragments at the west. At around 3:30, cancellation occurs between the negative fragments at the northwest and positive fragments emerge nearby. This cancellation produces a bright stripe at that direction. At the "far-north", cancellation occurs in another bipolar region and produce a very bright BP which grouped into No. 6 event, but affects the X-ray light curve of this event which shows a sharp peak at this time. The cancellation in both sites take in charge of the brightness of the BP. And the site can shift because of movement of the magnetic fragments. Also some new cancellation sites build up and a very complex structures of the bright region is observed during the data set. The fluctuations after this time is

03:18

04:05

The west part of the BP becomes very bright.

The negative fragments moving from the southwest is very close to the positive ones. The negative fragments at the west move closer to the positive fragments. The emerged negative fragments at the southeast touch the positive fragments at the east. Positive fragments at the east move toward the east main negative ones.


Cancellation occurs at both regions. Negative fragments at the south move toward the positive fragments.

controlled by cancellations occurring in this region. At the end of the data set, the positive fragments at the west site disappeared and two more cancellation site formed at northeast and south. The negative fragments at the east become much less then the beginning.