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Table A.1
A timeline on the X-ray and magnetic field evolution of a CH BP (marked as No. 1 event in Fig. 1) on 2007 Nov. 9.
| Time (UT) | X-ray BP behaviour | Magnetic fragment behaviour | Notes |
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| 06:38 | The BP is already present | A simple bipolar region | Beginning of the dataset |
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| 06:45 | BP reaches an intensity peak | A positive fragment moves towards a negative | |
| fragment and magnetic cancellation takes place | |||
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| 06:57 | BP becomes weaker | The cancelling positive fragment | This scenario repeats |
| disappears | around every 25 minutes on average. The | ||
| fluctuation always relates to magnetic | |||
| cancellation and the cancellation site is | |||
| always near to major positive polarities, | |||
| but sometimes only negative fragments | |||
| move to the site and at other times both | |||
| polarities move and join together. | |||
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| 07:52 | Negative fragments start to | ||
| emerge at about 10′′ away | |||
| from the positive ones, then | |||
| start moving towards the positive | |||
| polarities. | |||
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| 08:22 | A small BP emerges at the | A few weak negative fragments emerge west | |
| west side. | of the domain positive fragments | ||
| and cancellation occurs between these | |||
| two polarities. | |||
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| 08:43 | The small BP disappears. | One positive fragment at the west part | |
| disappeared after cancellation with newly | |||
| emerging negative fragments. | |||
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| 09:45 | The main BP reaches its second | The emerged negative fragments at 07:52 move | A few negative fragments disappear after |
| highest intensity peak. | closer to positive polarities and cancellation occurs. | this time and that leads to | |
| the BP fading again | |||
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| 10:10 | The main BP reaches its | The rest of the emerged negative fragments keep | Again it fades after the disappearance of a |
| highest intensity peak. | moving towards the positive polarities and cancel. | few negative fragments, however existing | |
| negative fragments keep cancelling and | |||
| totally disappear at 11:25 UT creating | |||
| a few peaks in the lightcurve of the BP. | |||
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| 10:36 | A new BP emerges southwest | Another negative polarity to the southwest | Cancellation and disappearance of this |
| of the main one. | move towards the positive polarities. | group of negative polarities take control | |
| of the behaviour of the new born BP. | |||
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| 12:31 | BP is almost fully gone. | Both positive polarities and the southwest | The main BP is very weak but still visible |
| negative polarities move towards each other, | When some other negative fragments | ||
| however, no cancellation was visible. | move closer to the positive fragments, | ||
| the BP flames up again until the end of the | |||
| dataset, the positive polarities still | |||
| exist, and the BP repeats its intensity | |||
| fluctuation. | |||
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