A complex solar coronal jet with two phases

Jie Chen, Jiangtao Su, Yuanyong Deng, E. R. Priest

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Jets often occur repeatedly from almost the same location. In this paper, a complex solar jet was observed with two phases to the west of NOAA AR 11513 on 2012 July 2. If it had been observed at only moderate resolution, the two phases and their points of origin would have been regarded as identical. However, at high resolution we find that the two phases merge into one another and the accompanying footpoint brightenings occur at different locations. The phases originate from different magnetic patches rather than being one phase originating from the same patch. Photospheric line of sight (LOS) magnetograms show that the bases of the two phases lie in two different patches of magnetic flux that decrease in size during the occurrence of the two phases. Based on these observations, we suggest that the driving mechanism of the two successive phases is magnetic cancellation of two separate magnetic fragments with an opposite-polarity fragment between them.

Original languageEnglish
Article number54
Number of pages8
JournalAstrophysical Journal
Issue number1
Publication statusPublished - 4 May 2017


  • Magnetic reconnection
  • Magnetohydrodynamics (MHD)
  • Sun: activity
  • Sun: corona
  • Sun: magnetic fields


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