标题： 由强制磁重联驱动的微耀斑活动 显示英文标题

标题： Microflare Activity driven by Forced Magnetic Reconnection

摘要： 高时间分辨率、多波长的太阳活动区光学观测结果被呈现，这些观测是使用瑞典太阳望远镜获得的。 两个磁性亮点以2.8公里/秒的恒定速度朝相反方向分离。 达到大约4400公里的分离距离后，在H-α和Ca-K图像中观察到多个Ellerman炸弹。 由于Ellerman炸弹，在磁性中性线附近产生的速度扰动，来源于同时的MDI数据，振幅为±6公里/秒，波长为1000公里。 速度振荡之后出现一个在H-α和Ca-K中可见的脉冲明亮现象，峰值强度增强了63%。 我们将这些速度扰动解释为触发强制重联所需的磁场变形。 H-α翼和Ca-K观测之间大约3分钟的时间延迟表明，观测到的磁重联发生在太阳表面以上200公里的高度。 这些观测结果与理论预测一致，并提供了由强制磁重联驱动的微耀斑活动的第一个观测证据。 显示英文摘要

摘要： High cadence, multiwavelength, optical observations of a solar active region are presented, obtained with the Swedish Solar Telescope. Two magnetic bright points are seen to separate in opposite directions at a constant velocity of 2.8km/s. After a separation distance of approximately 4400km is reached, multiple Ellerman bombs are observed in both H-alpha and Ca-K images. As a result of the Ellerman bombs, periodic velocity perturbations in the vicinity of the magnetic neutral line, derived from simultaneous MDI data, are generated with amplitude +/- 6km/s and wavelength 1000km. The velocity oscillations are followed by an impulsive brightening visible in H-alpha and Ca-K, with a peak intensity enhancement of 63%. We interpret these velocity perturbations as the magnetic field deformation necessary to trigger forced reconnection. A time delay of approximately 3min between the H-alpha wing and Ca-K observations indicate that the observed magnetic reconnection occurs at a height of 200km above the solar surface. These observations are consistent with theoretical predictions and provide the first observational evidence of microflare activity driven by forced magnetic reconnection.