Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008apj...677..699j&link_type=abstract
The Astrophysical Journal, Volume 677, Issue 1, pp. 699-703.
Astronomy and Astrophysics
Astronomy
16
Sun: Activity, Sun: Coronal Mass Ejections (Cmes), Sun: Flares, Sun: Magnetic Fields, Sun: Uv Radiation
Scientific paper
We present, to our knowledge for the first time, a rare observation of direct magnetic interaction between a transequatorial jet and interconnecting loops (IL) in the southern hemisphere. The jet originated from a flare and appeared to move outward along open field lines, but it passed so close to the IL that its edge met with one of the IL ends. As a result, the IL began to erupt, weak brightenings appeared at the meeting site, and a nearby dark feature was disturbed. After the eruption, in addition to a looplike dimming due to the disappearance of the IL, a dimming region was formed around its another end, which was very probably caused by the expansion or opening of its field lines and represented its evacuated feet. Two coronal mass ejections (CMEs) were observed within 2 hr in association with the event. One was related to the flare and the jet, while the other was due to the IL eruption. These observations suggest that a sole flare can not only trigger a CME but also simultaneously trigger an IL eruption by means of its interaction with a jet, so can lead to two interdependent CMEs, i.e., a sympathetic CME pair physically connected by the jet/IL interaction.
Jiang Yunchun
Shen Yuandeng
Wang Jingxiu
Yang Jiayan
Yi Bi
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