论文标题
由一系列过渡区微型射流驱动的EUV喷气机
An EUV jet driven by a series of transition region micro-jets
论文作者
论文摘要
喷气式飞机是太阳大气中最常见的喷发事件之一，在冠状和太阳能加速度的背景下，它们被认为很重要。我们介绍了一系列关于一系列喷气机的观察性研究，该序列与太阳动力学观测站（SDO）和界面区域成像光谱仪（IRIS）获取的数据。这个序列是特殊的，因为euv喷气机，$ \ sim29 \ arcsec $ long，带有圆顶般的基部，似乎是一系列过渡区域（TR）微型射流的结果，它们是几个长度的arcsec。我们发现，任何tr micro-jets的发生始终与micro-jets的发生始终相关。看到一束TR通量绳将TR微型射流连接到EUV射流底部的圆顶状结构。该捆绑包的上升是对TR微型射流的响应，而上升的运动最终触发了EUV射流。我们提出了一个涉及一组磁重复连接的方案，其中一系列TR微型射流与过程相关联，以去除对TR通量绳索的约束，从而使它们可以上升并触发EUV射流。我们的研究表明，低太阳大气中的小规模动力学对于了解电晕和太阳下部大气之间的能量和质量连接至关重要，即使其中许多可能不会直接将质量和能量直接泵送到电晕。
Jets are one of the most common eruptive events in the solar atmosphere, and they are believed to be important in the context of coronal heating and solar wind acceleration. We present an observational study on a sequence of jets with the data acquired with the Solar Dynamics Observatory (SDO) and the Interface Region Imaging Spectrograph (IRIS). This sequence is peculiar in that an EUV jet, $\sim29\arcsec$ long and with a dome-like base, appears to be a consequence of a series of transition region (TR) micro-jets that are a few arcsecs in length.We find that the occurrence of any TR micro-jets is always associated with the change of geometry of micro-loops at the footpoints of the microjets. A bundle of TR flux ropes is seen to link a TR micro-jet to the dome-like structure at the base of the EUV jet. This bundle rises as a response to the TR micro-jets, with the rising motion eventually triggering the EUV jet. We propose a scenario involving a set of magnetic reconnections, in which the series of TR micro-jets are associated with the processes to remove the constraints to the TR flux ropes and thus allow them to rise and trigger the EUV jet. Our study demonstrates that small-scale dynamics in the lower solar atmosphere are crucial in understanding the energy and mass connection between the corona and the solar lower atmosphere, even though many of them might not pump mass and energy to the corona directly.
