Triggering an Eruptive Flare by Emerging Flux in a Solar Active-Region Complex

摘要: A flare and fast coronal mass ejection originated between solar active regions NOAA 11514 11515 on 2012 July 1 (SOL2012-07-01) in response to flux emergence front of the leading sunspot trailing region 11515. Analyzing evolution photospheric magnetic structure, we find that triggered eruption by interaction with overlying a non-standard way. The new neither had opposite orientation nor location near polarity inversion line, which are favorable for strong reconnection arcade under it emerged. Moreover, its content remained significantly smaller than ( ${\approx}\,40~\%$ ). However, loop system rooted ran part regions, passing over site emergence. emerging flux, series jet emissions into system, caused but confined rise system. This lifted two weakening downward tension force thus destabilizing considerably sheared arcade. complex event was also associated supporting precursor activity an enhanced network acting large-scale simultaneous flares within regions.