A complex solar coronal jet with two phases

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

doi:10.3847/1538-4357/aa6c59

A complex solar coronal jet with two phases

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

Applied Mathematics

Research output: Contribution to journal › Article › peer-review

Abstract

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 language	English
Article number	54
Number of pages	8
Journal	Astrophysical Journal
Volume	840
Issue number	1
DOIs	https://doi.org/10.3847/1538-4357/aa6c59
Publication status	Published - 4 May 2017

Keywords

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

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Priest_2017_AJ_TwoPhases_FinalPubVersion
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title = "A complex solar coronal jet with two phases",

abstract = "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.",

keywords = "Magnetic reconnection, Magnetohydrodynamics (MHD), Sun: activity, Sun: corona, Sun: magnetic fields",

author = "Jie Chen and Jiangtao Su and Yuanyong Deng and Priest, {E. R.}",

note = "This work was partly supported by National Natural Science Foundation of China (grant Nos. 11303048, 11673033, 11373040, 11427901). This work was also partly supported by an International Exchanges cost share award with NSFC for overseas travel between collaborators in the UK and China, and State Key Laboratory for Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences.",

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doi = "10.3847/1538-4357/aa6c59",

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AU - Chen, Jie

AU - Su, Jiangtao

AU - Deng, Yuanyong

AU - Priest, E. R.

N1 - This work was partly supported by National Natural Science Foundation of China (grant Nos. 11303048, 11673033, 11373040, 11427901). This work was also partly supported by an International Exchanges cost share award with NSFC for overseas travel between collaborators in the UK and China, and State Key Laboratory for Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences.

PY - 2017/5/4

Y1 - 2017/5/4

N2 - 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.

AB - 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.

KW - Magnetic reconnection

KW - Magnetohydrodynamics (MHD)

KW - Sun: activity

KW - Sun: corona

KW - Sun: magnetic fields

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DO - 10.3847/1538-4357/aa6c59

M3 - Article

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SN - 0004-637X

VL - 840

JO - Astrophysical Journal

JF - Astrophysical Journal

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ER -

A complex solar coronal jet with two phases

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Keywords

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