arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1104.5564astro-ph.SR
收藏

无处不在的宁静太阳喷流

Ubiquitous quiet-Sun jets

V. Martinez Pillet, J. C. del Toro Iniesta, C. Quintero Noda

摘要:

IMaX/日出最近报道了安静太阳中高度动态和强烈多普勒频移的斯托克斯V信号的时间演化。我们试图确定相同的安静的太阳喷流在日出分光偏振仪(SP)的数据集。我们产生的线性偏振磁图与蓝移和红移远翼圆偏振磁图的组合,让一个简单的识别安静的太阳喷流。喷流在Hinode数据中被识别出来,其中红移和蓝移的情况经常成对出现。它们出现在呈现出宁静太阳中性线的横场区域旁边。它们也有明显的倾向于出现在颗粒的外边界。这些地区总是显示高度位移和异常的斯托克斯V剖面。宁静的太阳充满了喷流,这些喷流是在新的场区域以颗粒尺度出现时形成的,这些场区域负载着与周围环境相互作用的水平场线。这种相互作用暗示了产生所观察到的高速流的所涉及的场线的某种形式的重连。

英文摘要:

IMaX/Sunrise has recently reported the temporal evolution of highly dynamic and strongly Doppler shifted Stokes V signals in the quiet Sun. We attempt to identify the same quiet-Sun jets in the Hinode spectropolarimeter (SP) data set. We generate combinations of linear polarization magnetograms with blue- and redshifted far-wing circular polarization magnetograms to allow an easy identification of the quiet-Sun jets. The jets are identified in the Hinode data where both red- and blueshifted cases are often found in pairs. They appear next to regions of transverse fields that exhibit quiet-Sun neutral lines. They also have a clear tendency to occur in the outer boundary of the granules. These regions always display highly displaced and anomalous Stokes V profiles. The quiet Sun is pervaded with jets formed when new field regions emerge at granular scales loaded with horizontal field lines that interact with their surroundings. This interaction is suggestive of some form of reconnection of the involved field lines that generates the observed high speed flows.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑