太阳谱区的瞬态水平磁场
Transient horizontal magnetic fields in solar plage regions
摘要：
我们报告了在日之出号上的太阳光学望远镜上发现的孤立的、小规模的新兴磁场。光谱偏振观测进行了34秒的节奏的斑区位于光盘中心附近。通过Milne-Eddington反演推导出矢量磁场。观测结果表明，瞬态，空间孤立的水平磁场的广泛发生。水平磁场的横向范围与光球颗粒的大小相当。这些水平磁场似乎是由颗粒对流的上升流和下降流所引起的。我们还报告了一个似乎是由磁浮力不稳定性驱动的事件。我们把浮力驱动的出露称为第1类，对流驱动的出露称为第2类。虽然这两个事件的磁场强度约为600 G，类型1的填充因子比类型2的填充因子大两倍。我们的研究结果表明，颗粒对流在滩区的特点是发生率高的颗粒大小的瞬态水平场。
英文摘要：
We report the discovery of isolated, small-scale emerging magnetic fields in a plage region with the Solar Optical Telescope aboard Hinode. Spectro-polarimetric observations were carried out with a cadence of 34 seconds for the plage region located near disc center. The vector magnetic fields are inferred by Milne-Eddington inversion. The observations reveal widespread occurrence of transient, spatially isolated horizontal magnetic fields. The lateral extent of the horizontal magnetic fields is comparable to the size of photospheric granules. These horizontal magnetic fields seem to be tossed about by upflows and downflows of the granular convection. We also report an event that appears to be driven by the magnetic buoyancy instability. We refer to buoyancy-driven emergence as type1 and convection-driven emergence as type2. Although both events have magnetic field strengths of about 600 G, the filling factor of type1 is a factor of two larger than that of type2. Our finding suggests that the granular convection in the plage regions is characterized by a high rate of occurrence of granular-sized transient horizontal fields.
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。
