English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Filament eruptions occurring at different places within a relatively shorttime internal, but with a certain physical causal connection are usually knownas sympathetic eruption. Studies on sympathetic eruptions are not uncommon.However, in the existed reports, the causal links between sympathetic eruptionsremain rather speculative. In this work, we present detailed observations of asympathetic filament eruption event, where an identifiable causal link betweentwo eruptive filaments is observed. On 2015 November 15, two filaments (F1 inthe north and F2 in the south) were located at the southwestern quadrant ofsolar disk. The main axes of them were almost parallel to each other. Around22:20 UT, F1 began to erupt, forming two flare ribbons. The southwestern ribbonapparently moved to southwest and intruded southeast part of F2. Thiscontinuous intrusion caused F2's eventual eruption. Accompanying the eruptionof F2, flare ribbons and post-flare loops appeared in northwest region of F2.Meanwhile, neither flare ribbons nor post-flare loops could be observed insoutheastern area of F2. In addition, the nonlinear force-free field (NLFFF)extrapolations show that the magnetic fields above F2 in the southeast regionare much weaker than that in the northwest region. These results imply that theoverlying magnetic fields of F2 were not uniform. So we propose that thesouthwest ribbon formed by eruptive F1 invaded F2 from its southeast regionwith relatively weaker overlying magnetic fields in comparison with itsnorthwest region, disturbing F2 and leading F2 to erupt eventually.

Sympathetic eruptions of two filaments with an identifiable causal link observed by the Solar Dynamics Observatory