论文标题
调查高虹膜爆发流行率的数据集
Investigating datasets with high IRIS burst prevalence
论文作者
论文摘要
界面区域成像光谱仪（IRIS）在2013年和2014年采样的所有SI IV 1394 A光谱中约有0.01％的光谱具有虹膜突发曲线。但是，这些事件的分布在数据集中并未均匀分布，其中19.31％的光谱仅在六个射手中鉴定出来。在这里，我们研究了这六个数据集中的五个，以了解为什么它们包含如此多的虹膜爆发曲线。这项研究将有助于指导对虹膜爆发的未来针对性分析。我们分析了由Iris卫星采样的五个数据集，研究了SI IV 1394 A Spectra和1400 A Filter Slit-Jaw-Jaw-Jaw Imager（SJI）数据。通过使用自动化算法来识别虹膜突发曲线。此外，我们研究了由太阳能动力学观测站的HelioSeiss和磁成像仪（SDO/HMI）仪器采样的共同空间光线磁场映射。 The majority of identified IRIS burst profiles (12401 out of 13904) found in the five datasets analysed here were localised to seven small regions in the time-distance domain (temporal durations of <4 hours and spatial lengths of <12" along the slit). The SJI data co-spatial to these regions contained long-lived or repetitive compact brightenings, matching the defined properties of UV bursts, which在整个演变中，虹膜的爆发曲线均未限制在视野中最亮的像素（FOV），也不构成大多数明亮的（> 500 dn/s），这些虹膜爆发的次数比不断变化（例如，均可消除液体）。在整个2013年和2014年中确定的时间仅在七个小区域中包含在七个小区域中，沿着长期寿命（寿命> 10分钟）或重复的紫外线爆发沿着虹膜缝隙的轴发生。
Approximately 0.01 % of all Si IV 1394 A spectra sampled in 2013 and 2014 by the Interface Region Imaging Spectrograph (IRIS) have IRIS burst profiles. However, these events are not evenly distributed across datasets with 19.31 % of these spectra being identified in only six rasters. Here, we investigate five of these six datasets, to understand why they contain so many IRIS burst profiles. This research will help guide future targeted analyses of IRIS bursts. We analyse five datasets sampled by the IRIS satellite, studying both Si IV 1394 A spectra and 1400 A filter slit-jaw imager (SJI) data. IRIS burst profiles are identified through the use of an automated algorithm. Additionally, we study co-spatial line-of-sight photospheric magnetic field maps sampled by the Solar Dynamics Observatory's Helioseismic and Magnetic Imager (SDO/HMI) instrument. The majority of identified IRIS burst profiles (12401 out of 13904) found in the five datasets analysed here were localised to seven small regions in the time-distance domain (temporal durations of <4 hours and spatial lengths of <12" along the slit). The SJI data co-spatial to these regions contained long-lived or repetitive compact brightenings, matching the defined properties of UV bursts, which remained close to the IRIS slit throughout their evolutions. The IRIS burst profiles were not limited to the brightest pixels in the fields of view (FOVs) nor did they comprise the majority of bright (>500 DN/s) pixels. These IRIS burst profiles occurred co-spatial to evolving (e.g. cancelling) opposite polarity magnetic fields where magnetic reconnection is thought to be possible. More than 10 % of the IRIS burst profiles identified during the entirety of 2013 and 2014 are contained in just seven small regions in the time-distance domain where long-lived (lifetimes >10 minutes) or repetitive UV bursts occurred along the axis of the IRIS slit.
